A097643 Numbers n such that n=(d_1!!+d_2!!+...+d_k!!)-(d_1+d_2+...+d_k) where d_1 d_2 ... d_k is the decimal expansion of n.

4, 46, 478, 944

Offset: 1

Author

Farideh Firoozbakht, Aug 23 2004

Keywords

• fini
• full
• base
• nonn

Examples

			944 is in the sequence because 944=(9!!+4!!+4!!)-(9+4+4).
		

Crossrefs

Cf. A097642.