Number of integer partitions of n whose LCM is 2 * n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =1a(11) =0a(12) =1a(13) =0a(14) =2a(15) =12a(16) =0a(17) =0a(18) =6a(19) =0a(20) =10a(21) =32a(22) =6a(23) =0a(24) =8a(25) =0a(26) =9a(27) =0a(28) =32a(29) =0