56772

Appears in sequences

• a(n) = n*(n+1)^2*(2+n)*(3+2*n)*(19+8*n)/180.at n=8A076758
• Even numbers 2m such that A352612(2m) = A103131(2m).at n=43A352587
• a(n) = (1/(2*n+1)) * Sum_{k=0..n} k^4 * (2*k+1) * binomial(3*n-k,n-k).at n=6A390973