19923
domain: N
Appears in sequences
- Number of ternary rooted trees with n nodes and height exactly 9.at n=16A036424
- Numbers n such that p = n^2 + 2, p+2 and p+6 are consecutive primes.at n=28A086380
- Number of perfect Skolem sets.at n=9A107683
- Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0010-1110-0111-0100 pattern in any orientation.at n=14A146902
- The Wiener index of the Dutch windmill graph D(5,n) (n>=1).at n=28A180579
- a(n) = n*(5*n^2 - 3*n + 4) / 6.at n=29A203552
- Expansion of e.g.f. (1/x) * Series_Reversion( x*(2 - exp(x))^3 ).at n=4A376390