153011domain: NAppears in sequencesFibonacci sequence beginning 1, 22.at n=20A022392a(n) = n*F(n-1) + F(n), where F = A000045.at n=21A094588Diagonal sums of number triangle A106522.at n=20A106523Total sum of the numbers of partitions with positive k-th ranks of all partitions of n.at n=37A208479