133581

Appears in sequences

• Numbers k such that (89*10^(k-1) + 1)/9 is a depression prime.at n=9A082719
• Triangular array T(n,k) giving number of 2-connected graphs with n labeled nodes and k edges (n >= 3, n <= k <= n(n-1)/2).at n=23A123534
• Compositions of n into parts 3, 4 and 7.at n=52A245368
• a(n) = Sum_{k=0..n} 8^k * binomial(k-2/3,k) * binomial(2*n-2/3,n-k).at n=6A386959