Numbers k such that the k-th triangular number plus the reverse of k gives a square.
A113799
Numbers k such that the k-th triangular number plus the reverse of k gives a square.
Terms
- a(0) =3a(1) =36a(2) =45a(3) =423a(4) =486a(5) =558a(6) =1377a(7) =6690a(8) =15540a(9) =59460a(10) =110694a(11) =16867050a(12) =443820753
External references
- oeis: A113799