Partial sums of A053872.

Terms

a(0) =37a(1) =236a(2) =513a(3) =880a(4) =1877a(5) =2926a(6) =4029a(7) =5480a(8) =7189a(9) =8966a(10) =11103a(11) =13316a(12) =16269a(13) =19310a(14) =22717a(15) =26606a(16) =30595a(17) =34686a(18) =39995a(19) =47188a(20) =55071a(21) =66184a(22) =79941a(23) =95024a(24) =111097a(25) =128190a(26) =156833a(27) =185742a(28) =216001a(29) =248204