165181domain: NPropertiesPrimalityPrimeyesAppears in sequencesSolution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + 2, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=21A294543Expansion of 1/(1 - x*Product_{k>=1} (1 + k*x^k)).at n=14A299164Prime numbersat n=15107