788529152domain: NAppears in sequencesa(n) = (2*n + 1) * 2^(n + 1).at n=23A118417a(n) = n-th integer from among those positive integers with an exponent of n in their prime-factorizations.at n=23A123904a(n) is the smallest positive integral multiple of 2^n not in the range of the Euler phi function.at n=24A181662