Partial sums of A304050.

Terms

a(0) =1a(1) =7a(2) =25a(3) =55a(4) =91a(5) =139a(6) =211a(7) =289a(8) =367a(9) =463a(10) =583a(11) =721a(12) =847a(13) =979a(14) =1153a(15) =1333a(16) =1501a(17) =1687a(18) =1909a(19) =2149a(20) =2365a(21) =2587a(22) =2875a(23) =3157a(24) =3403a(25) =3679a(26) =4003a(27) =4351a(28) =4657a(29) =4963