A073048 Starting term of the first length-n chain of equidigital numbers (A046758).

5, 10, 1, 191, 13, 1134, 157, 1169312, 100149391, 1016258233, 107375450119, 10271593487494

Offset: 1

Author

Lekraj Beedassy, Aug 31 2002

Keywords

• hard
• more
• base
• nonn

Examples

			13 is in the sequence because prime decompositions of 13 through 17, i.e. 13, 14=2*7, 15=3*5, 16=2^4, 17, use as many digits as their normal decimal representation.
		

References

• Journal of Recreational Mathematics, 29(2) 138 1998, Solution to Problem 2209 "Equidigital Representation"

Crossrefs

Cf. A046758.

Extensions

a(9) corrected and a(11) from Donovan Johnson, Jul 30 2010

a(12) from Giovanni Resta, Aug 14 2013