43803domain: NAppears in sequencesa(n) = 144*n^2 - 161*n + 45.at n=17A156711Numbers n such that there are precisely 11 groups of orders n and n + 1.at n=6A295994E.g.f. satisfies A(x) = exp( 3 * x * exp(x) * A(x)^(1/3) ).at n=5A380407