40357

Properties

Appears in sequences

• Fibonacci sequence beginning 1, 15.at n=18A022105
• Convolution of Lucas numbers and (F(2), F(3), F(4), ...).at n=15A023619
• Smallest prime factor of A104365(n) = A104350(n) + 1.at n=17A104366
• Sum of all terms on the two principal diagonals of a 2n+1 X 2n+1 square spiral.at n=19A114254
• The sum of the principal diagonals of an n X n spiral.at n=39A137930
• Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime.at n=6A139005
• Number of (n+1) X (1+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=6A250891
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=27A250898
• Number of (7+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=0A250905
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=27A250942
• Number of (7+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=0A250949
• Growth series for affine Coxeter group (or affine Weyl group) D_9.at n=9A266764
• Prime numbersat n=4234