Position of 1 + n^3 in A003325.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =10a(5) =15a(6) =21a(7) =27a(8) =35a(9) =42a(10) =51a(11) =61a(12) =71a(13) =84a(14) =95a(15) =109a(16) =122a(17) =138a(18) =155a(19) =170a(20) =189a(21) =207a(22) =228a(23) =247a(24) =269a(25) =291a(26) =313a(27) =338a(28) =361a(29) =388