22664
domain: N
Appears in sequences
- Numbers n such that 2*p(n)+3, 2*p(n+1)+3, 2*p(n+2)+3 are consecutive primes, where p(i) denotes the i-th prime.at n=21A088066
- Number of one-element transitions among all integer partitions of the integers from m=0 to m=n in the unlabeled case.at n=18A096586
- First differences of A160379.at n=27A163989
- Number of (n+2) X (3+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 0 2 3 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 0 2 3 6 or 7.at n=11A252109
- Wiener index of the n X n fiveleaper graph.at n=3A292040
- Number of valid hook configurations of 132-avoiding permutations of [n].at n=11A307787
- Expansion of Product_{k>=1} (1 + x^k) * (1 + x^(2*k)) * (1 + x^(3*k)) * (1 + x^(4*k)) * (1 + x^(5*k)) / ((1 - x^k) * (1 - x^(2*k)) * (1 - x^(3*k)) * (1 - x^(4*k)) * (1 - x^(5*k))).at n=15A327050
- The number of regions formed inside an isosceles triangle by straight line segments mutually connecting all vertices and all points that divide the two equal length sides into n equal parts; the base of the triangle contains no points other than its vertices.at n=17A332953
- Numbers k such that k plus the sum of the fifth powers of the digits of k is a cube.at n=6A341286
- Regular triangle read by rows, T(n,k) = T(n,k-1)+2*T(n-1,k)-T(n-1,k-1) for 1<=k<=n-2 with T(n,n)=T(n,n-1)=T(n,n-2) for n>=3 and T(1,1)=T(2,1)=T(2,2)=1.at n=50A341695