Number of odd singletons in all partitions of n (n>=0).

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =2a(5) =5a(6) =5a(7) =11a(8) =13a(9) =23a(10) =28a(11) =45a(12) =57a(13) =86a(14) =108a(15) =156a(16) =199a(17) =276a(18) =350a(19) =475a(20) =601a(21) =798a(22) =1005a(23) =1312a(24) =1646a(25) =2120a(26) =2643a(27) =3365a(28) =4178a(29) =5264