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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
4, 46, 478, 944 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..4.
EXAMPLE
944 is in the sequence because 944=(9!!+4!!+4!!)-(9+4+4).
CROSSREFS
Cf. A097642.
Sequence in context: A173716 A320229 A097952 * A155652 A222098 A197131
Adjacent sequences: A097640 A097641 A097642 * A097644 A097645 A097646
KEYWORD
fini,full,base,nonn
AUTHOR
Farideh Firoozbakht, Aug 23 2004
STATUS
approved

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Last modified June 8 08:55 EDT 2024. Contains 373207 sequences. (Running on oeis4.)