A227393 a(n) = concatenation of first 3n terms of A033627.
1, 124, 12471013, 12471013161922, 12471013161922252831, 124710131619222252831343740, 124710131619222252831343740434649, 124710131619222252831343740434649525558
Offset: 1
Examples
124 is the concatenation of 1,2 and 4. 12471013 is the concatenation of 1, 2, 4, 7 10 and 13.
Crossrefs
Cf. A033627
Extensions
Edited by N. J. A. Sloane, Jul 16 2013
Comments