Number of partitions of n with up to two distinct kinds of 1.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =5a(5) =7a(6) =10a(7) =14a(8) =19a(9) =26a(10) =35a(11) =46a(12) =61a(13) =80a(14) =103a(15) =133a(16) =171a(17) =217a(18) =275a(19) =347a(20) =435a(21) =544a(22) =677a(23) =838a(24) =1036a(25) =1276a(26) =1564a(27) =1913a(28) =2334a(29) =2837