19996

Appears in sequences

• High temperature series in v = tanh(J/kT) for residual correlation function (correction to susceptibility) for the spin-1/2 Ising model on square lattice.at n=9A002907
• Number of fanout-free Boolean functions of n variables using And, Or and Not gates.at n=5A005737
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 96 ones.at n=11A031864
• Number of partitions satisfying cn(2,5) <= cn(0,5) + cn(3,5) and cn(2,5) <= cn(0,5) + cn(4,5) and cn(3,5) <= cn(0,5) + cn(1,5) and cn(3,5) <= cn(0,5) + cn(4,5).at n=42A039875
• Numbers n such that phi(n) is a proper substring of n.at n=9A066663
• Numbers n such that the digits of n end in phi(n).at n=10A067206
• Numbers k such that (k!! + (k+1)!! - 1)/2 is prime.at n=16A076209
• a(n) = k where R(k+4) = 2.at n=3A086940
• Composite numbers, not ending with 0, sharing a 3-digit sequence with some of its prime factors.at n=17A131523
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (0, 0, 1), (1, 0, -1), (1, 1, -1)}.at n=9A148847
• a(n) = p(n)*p(n+2) - 3*p(n+1), where p(n) is the n-th prime.at n=32A152528
• The number of trisubstitution products with composition C_n H_(2n-1) X_2 Y.at n=21A159940
• Equals two maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 n X 3 array.at n=5A220932
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nXk array.at n=33A220935
• T(n,k) = Equals two maps: number of n X k binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 n X k array.at n=33A221290
• Equals two maps: number of 6Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 6Xn array.at n=2A221294
• Number of n X 3 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=5A230270
• Number of nX6 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=2A230273
• T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=30A230275
• T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.at n=33A230275