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A101697
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Numbers n such that phi(n) is equal to d_1!+d_2!+...+d_k!, where d_1 d_2 ... d_k is the decimal expansion of n.
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3
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OFFSET
| 1,2
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EXAMPLE
| 854696 is in the sequence because phi(854696)=8!+5!+4!+6!+9!+6!.
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MATHEMATICA
| Do[h = IntegerDigits[n]; l = Length[h]; If[EulerPhi[n] == Sum[h[[k]]!, {k, l}], Print[n]], {n, 10000000}]
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CROSSREFS
| Cf. A100416.
Sequence in context: A043591 A022256 A198537 * A104948 A206193 A206665
Adjacent sequences: A101694 A101695 A101696 * A101698 A101699 A101700
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KEYWORD
| base,fini,full,nonn
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AUTHOR
| Farideh Firoozbakht (mymontain(AT)yahoo.com), Dec 12 2004
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