A133650(13) = 212 occurs in the concatenation 99111122123132142152162172182192211 of A133650(1), ..., A133650(12). Hence 212 is an early bird number of order 3.

PROG

For JBASIC program see A133651 (order = 3; maxterm = 600).

CROSSREFS

Cf. A116700 (early bird numbers), A133650 (early bird numbers of order 2), A133652 (least early bird number of order n).