26038

Appears in sequences

• Dirichlet convolution of Catalan numbers with Bell numbers.at n=9A034769
• Numbers having four 6's in base 8.at n=8A043448
• Number of winning binary "same game" templates with ternary digits totaling n.at n=22A066346
• Number of subsets of {1, ..., n} that are neither double-free nor sum-free.at n=15A088812
• Indices k such that 3 plus the k-th triangular number is a perfect square.at n=11A154138
• Number of right triangles on a (n+1)X6 grid.at n=23A189810
• Integers n not of form 3m+2 such that for any integer k > 0, n*10^k+1 has a divisor in the set { 7, 11, 13, 37 }.at n=4A243969
• Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2.at n=20A255227
• a(n) is the number of n-celled snake polyominoes in the {4,5} tessellation of the hyperbolic plane.at n=12A390196