56388

Appears in sequences

• a(n) = 1^2 + prime(1)^2 + prime(2)^2 + ... + prime(n)^2.at n=24A024525
• Number of 5 X 5 X 5 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=25A166213
• Number of n-length words w over a 6-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z.at n=10A240612
• a(n) = n*(n+1)*(7*n+2)/6.at n=36A255211