245916

Appears in sequences

• Number of (n+5)X(n+5) 0..2 matrices with each 6X6 subblock idempotent.at n=3A224628
• Number of (n+5)X9 0..2 matrices with each 6X6 subblock idempotent.at n=3A224632
• T(n,k)=Number of (n+5)X(k+5) 0..2 matrices with each 6X6 subblock idempotent.at n=24A224636
• Expansion of Sum_{i>=1} x^(i^2) / (1 - Sum_{j>=1} x^(j^2))^2.at n=29A281704
• Triangle read by rows: T(n,k) is the number of lone-child-avoiding rooted trees with n leaves of exactly k colors.at n=30A319376