Convolution of A000010 with itself.

Terms

a(0) =1a(1) =2a(2) =5a(3) =8a(4) =16a(5) =20a(6) =36a(7) =44a(8) =68a(9) =76a(10) =120a(11) =124a(12) =188a(13) =196a(14) =276a(15) =272a(16) =404a(17) =380a(18) =544a(19) =532a(20) =716a(21) =668a(22) =968a(23) =860a(24) =1184a(25) =1120a(26) =1472a(27) =1332a(28) =1896a(29) =1624