632710domain: NAppears in sequencesNumber of (3,n)-partitions of a chain of length n^2.at n=13A055658a(n) = binomial(prime(n+2), 3).at n=35A126995a(n) = (32*n^3 - 2*n)/3.at n=39A267031a(n) = (5*n + 5)*(5*n + 6)*(5*n + 7)/6.at n=30A300523Squarefree tetrahedral numbers which are products of five distinct primes.at n=8A354976