79441

Appears in sequences

• T(n,k) = Number of (n+2) X (k+2) 0..4 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock.at n=29A186579
• Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.at n=22A261529
• a(n) = [x^(2*n)] Product_{k=0..n-1} (1 + k*x)^4.at n=4A384030
• a(n) = (n^4-3*n^2+4*n+2)/2.at n=20A387525