22646
domain: N
Appears in sequences
- Numbers k for which 10*2^k + 3 is a prime (giving terms of A068712).at n=51A068713
- Indices of decagonal numbers (A001107) that are also triangular (A000217).at n=7A133217
- Indices of decagonal numbers that are also hexagonal.at n=3A203136
- G.f. A(x) satisfies A(x) = 1/( 1 - x*(A(x) + A(2*x)) ).at n=5A385617