172050

Appears in sequences

• Coordination sequence for 4-dimensional RR-centered di-isohexagonal orthogonal lattice.at n=25A008528
• a(n) = Sum_{i=1..floor((n+2)/4)} a(2i-1)*a(n-2i+1), with a(1)=a(2)=1 and a(3)=6.at n=15A024953
• Number of (n+1) X (3+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=7A253490
• Numbers k such that the sum of the squares of the odd divisors of k (A050999) is divisible by k.at n=34A355543