181104domain: NAppears in sequencesa(n) = n^2*(n+1)*binomial(2*n-2, n-1)/2.at n=7A037972Number of partitions of 2*n with no part divisible by 3 and all odd parts occurring with even multiplicities.at n=42A098151a(n) = 2*binomial(n,2) + 3*binomial(n,3) + 4*binomial(n,4).at n=33A384852