Position of n^3 + (n+1)^3 in A003325.

Terms

a(0) =2a(1) =5a(2) =9a(3) =14a(4) =20a(5) =30a(6) =40a(7) =50a(8) =61a(9) =77a(10) =91a(11) =107a(12) =125a(13) =145a(14) =165a(15) =186a(16) =212a(17) =238a(18) =262a(19) =288a(20) =321a(21) =350a(22) =380a(23) =412a(24) =450a(25) =485a(26) =519a(27) =556a(28) =600a(29) =642