Number of partitions of n into parts 4k+1 and 4k+3 with at least one part of each type.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =2a(7) =4a(8) =4a(9) =5a(10) =7a(11) =10a(12) =12a(13) =14a(14) =18a(15) =24a(16) =28a(17) =33a(18) =41a(19) =50a(20) =59a(21) =70a(22) =84a(23) =100a(24) =117a(25) =137a(26) =161a(27) =188a(28) =219a(29) =254