81270
domain: N
Appears in sequences
- Expansion of 1/((1-x)*(1-6*x)*(1-7*x)).at n=5A016241
- Triangle T(n,k) = number of degree-n permutations with k even cycles, k=0..n.at n=47A060523
- Sum of all parts of all partitions of n.at n=27A066186
- Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>3z.at n=29A212514
- Number of (w,x,y,z) with all terms in {1,...,n} and w<=|x-y|+|y-z|.at n=19A212673
- The Wiener index of the ortho-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=17A216108
- a(n) = n*(n+1)*(n+3).at n=42A317637