Indices k of hex numbers H(k) that are also triangular.
A087125
Indices k of hex numbers H(k) that are also triangular.
Terms
- a(0) =0a(1) =5a(2) =54a(3) =539a(4) =5340a(5) =52865a(6) =523314a(7) =5180279a(8) =51279480a(9) =507614525a(10) =5024865774a(11) =49741043219a(12) =492385566420
External references
- oeis: A087125