Partial sums of A299279.

Terms

a(0) =1a(1) =9a(2) =39a(3) =107a(4) =233a(5) =413a(6) =699a(7) =1047a(8) =1557a(9) =2129a(10) =2927a(11) =3779a(12) =4929a(13) =6117a(14) =7683a(15) =9263a(16) =11309a(17) =13337a(18) =15927a(19) =18459a(20) =21657a(21) =24749a(22) =28619a(23) =32327a(24) =36933a(25) =41313a(26) =46719a(27) =51827a(28) =58097a(29) =63989