Number of partitions of n with even number (or 0) 2's.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =5a(6) =7a(7) =10a(8) =15a(9) =20a(10) =27a(11) =36a(12) =50a(13) =65a(14) =85a(15) =111a(16) =146a(17) =186a(18) =239a(19) =304a(20) =388a(21) =488a(22) =614a(23) =767a(24) =961a(25) =1191a(26) =1475a(27) =1819a(28) =2243a(29) =2746