Partial sums of A045954.

Terms

a(0) =2a(1) =6a(2) =12a(3) =22a(4) =34a(5) =52a(6) =72a(7) =94a(8) =120a(9) =154a(10) =190a(11) =232a(12) =276a(13) =326a(14) =378a(15) =432a(16) =490a(17) =558a(18) =628a(19) =704a(20) =788a(21) =878a(22) =976a(23) =1076a(24) =1178a(25) =1286a(26) =1400a(27) =1516a(28) =1634a(29) =1764