Partial sums of A301718.

Terms

a(0) =1a(1) =6a(2) =17a(3) =34a(4) =57a(5) =85a(6) =118a(7) =157a(8) =202a(9) =253a(10) =309a(11) =370a(12) =437a(13) =510a(14) =589a(15) =673a(16) =762a(17) =857a(18) =958a(19) =1065a(20) =1177a(21) =1294a(22) =1417a(23) =1546a(24) =1681a(25) =1821a(26) =1966a(27) =2117a(28) =2274a(29) =2437