Partial sums of A299900.

Terms

a(0) =1a(1) =5a(2) =12a(3) =24a(4) =48a(5) =86a(6) =136a(7) =204a(8) =298a(9) =420a(10) =573a(11) =760a(12) =983a(13) =1243a(14) =1536a(15) =1867a(16) =2249a(17) =2687a(18) =3187a(19) =3756a(20) =4384a(21) =5062a(22) =5799a(23) =6599a(24) =7469a(25) =8427a(26) =9478a(27) =10619a(28) =11846a(29) =13149