786420
domain: N
Appears in sequences
- a(n) = Sum_{k=0..n} (k+1) * A026637(n,k).at n=16A026970
- First differences of (n+1)^5-n^5.at n=33A068236
- Expansion of x(1-2x+3x^2)/(1-x-2x)^2;.at n=18A099431
- a(1)=1; thereafter, a(n+1) = 20*n^3 + 10*n.at n=34A101098
- Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^18 = I.at n=19A168728
- Number of additive Z_2 Z_8 codes of a certain type (see Siap-Aydogdu for precise definition).at n=14A226264