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Search: id:A070163
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A070163 Primes arising in A070162(n). +0
1
3, 3, 2, 5, 7, 7, 7, 11, 11, 11, 13, 17, 23, 19, 23, 29, 23, 23, 31, 29, 31, 29, 43, 31, 31, 47, 37, 53, 47, 41, 59, 43, 47, 47, 47, 59, 53, 71, 59, 59, 61, 89, 67, 71, 71, 73, 109, 79, 107, 79, 107, 83, 83, 89, 131, 109, 127, 97, 137, 101, 139, 103, 107, 107, 109, 139 (list; graph; listen)
OFFSET

1,1

FORMULA

a[n]=A070162(n)-A000010(A070162(n))-1=A051953(A070162(n))-1

MATHEMATICA

Do[s=n-EulerPhi[n]-1; If[PrimeQ[s], Print[s]], n, 1, 10000]

CROSSREFS

Cf. A000010, A051953, A070162.

Adjacent sequences: A070160 A070161 A070162 this_sequence A070164 A070165 A070166

Sequence in context: A117937 A110897 A116644 this_sequence A083343 A110898 A106365

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Apr 26 2002

page 1

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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