51508

Appears in sequences

• Number of nonnegative integer 5 X 5 matrices with sum of elements equal to n, under row and column permutations.at n=11A052367
• Numbers n such that 5*10^n + 3 is prime.at n=18A096254
• Triangle of coefficients from a polynomial recursion with row sum near =2*5^n: p(x,n)=(x + 1)*(p(x, n - 1) + 2*5^(n - 2)*(x + 5*x^Floor[n/2] + x^(n - 2))).at n=38A153354
• The number of trisubstitution products with composition C_n H_(2n-1) X_2 Y.at n=29A159940
• Hyper-Wiener index of a benzenoid consisting of a double-step zig-zag chain of n hexagons (n >= 2, s = 2123; see the Gutman et al. reference).at n=9A193396
• Magic sums of 4 X 4 magic squares composed of odd squares.at n=30A271582
• Numbers k such that (91*10^k + 11)/3 is prime.at n=28A271822
• a(n) = (i^n)*Sum_{k=0..n} (k+1)*B_k*|s(n+2,k+2)|*(n+2)^k.at n=6A286483