Number of partitions of n into parts congruent to 1 mod 3.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =2a(7) =3a(8) =4a(9) =4a(10) =5a(11) =6a(12) =7a(13) =8a(14) =10a(15) =11a(16) =13a(17) =15a(18) =17a(19) =19a(20) =23a(21) =26a(22) =29a(23) =33a(24) =38a(25) =42a(26) =48a(27) =54a(28) =61a(29) =68