19906

Appears in sequences

• G.f. satisfies: A(x) = A(x^2)^2 + x*A(x^2)^4.at n=21A174513
• Number of (n+1) X 3 0..2 matrices with each 2 X 2 subblock idempotent.at n=14A224670
• Number of (n+1) X (2+1) 0..2 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant-stress 1 X 1 tilings).at n=8A234260
• Numbers k such that (13*10^k + 161)/3 is prime.at n=20A284779
• a(n) = number of isogeny classes of p-divisible groups of abelian varieties of dimension n over an algebraically closed field of characteristic p (for any fixed prime p).at n=26A361721