Number of partitions of n with equal nonzero number of parts congruent to each of 1 and 3 (mod 4).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =0a(6) =1a(7) =0a(8) =5a(9) =0a(10) =6a(11) =0a(12) =17a(13) =0a(14) =22a(15) =0a(16) =50a(17) =0a(18) =66a(19) =0a(20) =130a(21) =0a(22) =174a(23) =0a(24) =314a(25) =0a(26) =421a(27) =0a(28) =711a(29) =0