Partial sums of A301688.

Terms

a(0) =1a(1) =5a(2) =14a(3) =26a(4) =43a(5) =65a(6) =89a(7) =119a(8) =154a(9) =190a(10) =233a(11) =281a(12) =329a(13) =385a(14) =446a(15) =506a(16) =575a(17) =649a(18) =721a(19) =803a(20) =890a(21) =974a(22) =1069a(23) =1169a(24) =1265a(25) =1373a(26) =1486a(27) =1594a(28) =1715a(29) =1841