70625252863
domain: N
Appears in sequences
- Binomial coefficients C(n,81).at n=8A017745
- Binomial coefficients C(89,n).at n=8A017805
- Number of 9-ary trees.at n=10A059967
- Eighth column of triangle A062993 (without leading zeros). A Pfaff-Fuss or 9-Raney sequence.at n=10A062994
- a(n) = binomial(n*(n+1),n)/(n+1).at n=9A135861
- G.f. A(x) satisfies A(x) = 1 + x*A(x)^5*A(-x)^4.at n=20A143554
- Number of n-member subsets of [10*n] whose elements sum to a multiple of ten.at n=9A318598
- Number of 9-member subsets of [9*n] whose elements sum to a multiple of n.at n=10A318630