a(n) is least number > 0 such that the concatenation of a(1) ... a(n) is 13-gonal: (11n^2 - 9n)/2.
A264842
a(n) is least number > 0 such that the concatenation of a(1) ... a(n) is 13-gonal: (11n^2 - 9n)/2.
Terms
- a(0) =1a(1) =3a(2) =36a(3) =54765a(4) =123152388
External references
- oeis: A264842