Number of integer partitions of n whose Durfee square has sides of even size.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =5a(7) =8a(8) =14a(9) =20a(10) =30a(11) =40a(12) =55a(13) =70a(14) =91a(15) =112a(16) =141a(17) =170a(18) =209a(19) =250a(20) =305a(21) =364a(22) =444a(23) =534a(24) =655a(25) =796a(26) =984a(27) =1208a(28) =1504a(29) =1860