54426

Appears in sequences

• a(n) = n*(7*n^2 - 1)/6.at n=36A004126
• [ exp(3/10)*n! ].at n=7A030950
• Numbers k such that the "inventory" A063850 of k is a perfect square.at n=20A079465
• Number of n X 3 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, and upper left element zero.at n=5A231076
• T(n,k) = number of n X k 0..3 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, and upper left element zero.at n=33A231080
• Numbers k such that k divides the sum of the first k primes with even indices.at n=21A263546