520520

Appears in sequences

• a(n) = 5*(n+1)*binomial(n+4,6).at n=10A027802
• a(n) = 143*(n+1)*binomial(n+4,13)/2.at n=3A027809
• Number of binary strings of length n with no substrings equal to 0000, 0011, or 1011.at n=31A164429
• Triangle read by rows. Numerators of the coefficients of a sequence of rational polynomials r_n(x) with r_n(1) = B(2*n), where B(n) are the Bernoulli numbers.at n=33A356652