Numbers k such that k^3 - b2 is a triangular number (A000217), where b2 is the largest square less than k^3.
A233401
Numbers k such that k^3 - b2 is a triangular number (A000217), where b2 is the largest square less than k^3.
Terms
- a(0) =1a(1) =4a(2) =8a(3) =21a(4) =37a(5) =40a(6) =56a(7) =112a(8) =113a(9) =204a(10) =280a(11) =445a(12) =481a(13) =560a(14) =688a(15) =709a(16) =1933a(17) =1945a(18) =3601a(19) =3805a(20) =3861a(21) =4156a(22) =4333a(23) =4365a(24) =7096a(25) =8408a(26) =8516a(27) =11064a(28) =12688a(29) =13609
External references
- oeis: A233401