8240232domain: NAppears in sequencesa(n) = n^4*binomial(2*n,n).at n=7A069121Expansion of g.f.: exp( Sum_{n>=1} [ Sum_{k>=0} C(n+k-1,k)^3 *x^k ] *x^n/n ).at n=11A181066a(n) is the least integer that can be expressed as the sum of one or more consecutive nonzero heptagonal numbers in exactly n ways.at n=2A334011