331350016domain: NAppears in sequencesa(n) = T(n,3), array T as in A049600.at n=21A049612Interleave n+1 and 2n+1 and take binomial transform.at n=25A098156Numbers with 46 divisors.at n=20A175753a(n) = prime(n) * 2^n.at n=21A265127