Number of partitions of n into parts 5k or 5k+1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =3a(7) =3a(8) =3a(9) =5a(10) =7a(11) =8a(12) =8a(13) =8a(14) =11a(15) =15a(16) =17a(17) =18a(18) =18a(19) =23a(20) =30a(21) =35a(22) =37a(23) =38a(24) =45a(25) =57a(26) =66a(27) =71a(28) =73a(29) =85