79612domain: NAppears in sequencesNumber of unimodal maps [1..n]->[0..3].at n=17A223659Number of distinct values of the sum of 5 products of three 0..n integers.at n=25A225262a(n) = Sum_{k=0..n} (-1)^k * binomial(4*n-k-1,n-k).at n=6A371814