9437185domain: NAppears in sequencesa(n) = (n-1)*2^n + 1.at n=19A000337a(n) = 2*a(n-1) - 1 with a(0) = 10.at n=20A083705a(n) = 9*4^n+1.at n=10A199208Expansion of Sum_{k>0} (x * (1 + (2 * x)^k))^k.at n=26A360752a(n) = Sum_{d|n} d^(n/d) * binomial(n/d-1,d-1).at n=37A376020