a(n) is the number of partitions of 2n that can be obtained by adding together two (not necessarily distinct) partitions of n.

A002219

a(n) is the number of partitions of 2n that can be obtained by adding together two (not necessarily distinct) partitions of n.

Terms

    a(0) =1a(1) =3a(2) =6a(3) =14a(4) =25a(5) =53a(6) =89a(7) =167a(8) =278a(9) =480a(10) =760a(11) =1273a(12) =1948a(13) =3089a(14) =4682a(15) =7177a(16) =10565a(17) =15869a(18) =22911a(19) =33601a(20) =47942a(21) =68756a(22) =96570a(23) =136883a(24) =189674a(25) =264297a(26) =362995a(27) =499617a(28) =678245a(29) =924522

External references