Partial sums of A061262.

Terms

a(0) =0a(1) =3a(2) =15a(3) =36a(4) =88a(5) =145a(6) =236a(7) =357a(8) =493a(9) =704a(10) =896a(11) =1122a(12) =1531a(13) =1862a(14) =2229a(15) =2635a(16) =3146a(17) =3653a(18) =4539a(19) =5176a(20) =5948a(21) =6669a(22) =7540a(23) =8492a(24) =9594a(25) =10660a(26) =11887a(27) =13079a(28) =14720a(29) =16341