Number of partitions of n such that the least part occurs exactly twice.

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =1a(5) =3a(6) =3a(7) =6a(8) =5a(9) =11a(10) =11a(11) =17a(12) =20a(13) =30a(14) =33a(15) =49a(16) =56a(17) =77a(18) =92a(19) =122a(20) =143a(21) =190a(22) =225a(23) =287a(24) =344a(25) =435a(26) =516a(27) =648a(28) =770a(29) =951