109568
domain: N
Appears in sequences
- Generalized weak orders on n points.at n=4A004121
- a(n)= 8*a(n-1) -16*a(n-2) +4*a(n-4).at n=8A108012
- Expansion of (1-x)*(1+8*x+60*x^2)/((1-2*x)*(1+2*x)*(1-4*x)).at n=7A120655
- Number of slim perfect graphs on n nodes.at n=8A123905
- Numbers with 22 divisors.at n=26A137485
- E.g.f. satisfies: A(x) = 1/(1 - sinh(x*A(x))).at n=6A201628
- Coordination sequence for (2,6,infinity) tiling of hyperbolic plane.at n=24A265070
- Column 1 in the matrix of A279212 (whose indexing starts at 0).at n=13A335903
- a(n) is the least number of the form p^2 + q^2 - 2 for primes p and q that is an odd prime times 2^n, or -1 if there is no such number.at n=10A359492