A109016 Concatenate n and the sum of factorials of the digits of n.

1, 11, 22, 36, 424, 5120, 6720, 75040, 840320, 9362880, 102, 112, 123, 137, 1425, 15121, 16721, 175041, 1840321, 19362881, 203, 213, 224, 238, 2426, 25122, 26722, 275042, 2840322, 29362882, 307, 317, 328, 3312, 3430, 35126, 36726, 375046

Offset: 0

Author

Jason Earls, Jun 16 2005

Keywords

• base
• easy
• nonn

Examples

			a(16)=16721 because 1!+6! = 721.
		

Crossrefs

Cf. A061602.

Programs

Mathematica

Table[FromDigits[Join[IntegerDigits[n],IntegerDigits[Total[IntegerDigits[n]!]]]],{n,0,40}] (* Harvey P. Dale, Jul 13 2023 *)