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Search: id:A137598
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| A137598 |
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Numbers n such that phi(n)=reversal(n)+1. |
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+0
2
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OFFSET
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1,1
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EXAMPLE
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phi(95793434)=43439760=43439759+1=reversal(95793434)+1, so 95793434 is in the sequence. Next term is greater than 25*10^7.
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MATHEMATICA
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Do[If[EulerPhi@n==FromDigits@Reverse@IntegerDigits@n+1, Print[n]], {n, 255000000}]
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CROSSREFS
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Cf. A137599.
Sequence in context: A104167 A092717 A083734 this_sequence A133560 A038009 A090209
Adjacent sequences: A137595 A137596 A137597 this_sequence A137599 A137600 A137601
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KEYWORD
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base,more,nonn
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AUTHOR
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Farideh Firoozbakht (mymontain(AT)yahoo.com), Feb 23 2008
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