Generalized divisor function. Number of partitions of n with exactly three part sizes.

Terms

a(0) =1a(1) =2a(2) =5a(3) =10a(4) =15a(5) =25a(6) =37a(7) =52a(8) =67a(9) =97a(10) =117a(11) =154a(12) =184a(13) =235a(14) =277a(15) =338a(16) =385a(17) =469a(18) =531a(19) =630a(20) =698a(21) =810a(22) =910a(23) =1038a(24) =1144a(25) =1295a(26) =1425a(27) =1577a(28) =1741a(29) =1938