Partial sums of A299281.

Terms

a(0) =1a(1) =7a(2) =26a(3) =67a(4) =139a(5) =253a(6) =419a(7) =643a(8) =931a(9) =1295a(10) =1749a(11) =2299a(12) =2947a(13) =3705a(14) =4591a(15) =5611a(16) =6763a(17) =8059a(18) =9521a(19) =11155a(20) =12955a(21) =14933a(22) =17115a(23) =19507a(24) =22099a(25) =24903a(26) =27949a(27) =31243a(28) =34771a(29) =38545