Number of integer partitions of n whose parts plus 1 are relatively prime.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =4a(5) =5a(6) =9a(7) =13a(8) =21a(9) =29a(10) =43a(11) =56a(12) =79a(13) =109a(14) =146a(15) =192a(16) =254a(17) =329a(18) =428a(19) =553a(20) =707a(21) =900a(22) =1139a(23) =1434a(24) =1800a(25) =2251a(26) =2799a(27) =3472a(28) =4286a(29) =5275