Duplicate of A008084.

Terms

a(0) =1a(1) =4a(2) =9a(3) =19a(4) =35a(5) =52a(6) =72a(7) =100a(8) =131a(9) =163a(10) =201a(11) =244a(12) =290a(13) =340a(14) =393a(15) =451a(16) =515a(17) =580a(18) =648a(19) =724a(20) =803a(21) =883a(22) =969a(23) =1060a(24) =1154a(25) =1252a(26) =1353a(27) =1459a(28) =1571a(29) =1684