Partial sums of A348227.

Terms

a(0) =1a(1) =5a(2) =17a(3) =37a(4) =71a(5) =109a(6) =163a(7) =217a(8) =291a(9) =361a(10) =455a(11) =541a(12) =655a(13) =757a(14) =891a(15) =1009a(16) =1163a(17) =1297a(18) =1471a(19) =1621a(20) =1815a(21) =1981a(22) =2195a(23) =2377a(24) =2611a(25) =2809a(26) =3063a(27) =3277a(28) =3551a(29) =3781