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A136335 Indices of the primes p for which the number of representations of p as the sum of a perfect prime power (A025475: q^e with e>1) and an integer k which is less than q exceeds one. 0
10, 31, 14774, 14775, 65686, 110128, 110129, 110130, 110131, 110132, 110133, 110134, 110135, 110136, 110137, 165952, 165953, 165954, 165955, 165956, 165957, 165958, 304841, 304842, 304843, 304844, 304845, 304846, 304847 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Where A138363 exceeds 1.

LINKS

Table of n, a(n) for n=1..29.

EXAMPLE

A000040(10)=29; A138363(10) = #{4+5^2, 2+3^3} = 2.

MATHEMATICA

f[n_] := Block[{c = 0, e, j, k = 1, p = Prime@n, q}, j = 1 + PrimePi@ Sqrt@ p; While[k < j, q = Prime@k; If[p < q + q^Floor@ Log[q, p], c++ ]; k++ ]; c]; lst = {}; Do[ If[f@n > 1, AppendTo[lst, n]; Print[Prime@n]], {n, 25*10^5}]

CROSSREFS

Cf. A138363, A074267.

Sequence in context: A097236 A280202 A061485 * A008422 A063926 A239834

Adjacent sequences:  A136332 A136333 A136334 * A136336 A136337 A136338

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller & Robert G. Wilson v, Mar 23 2008

STATUS

approved

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Last modified October 21 16:25 EDT 2019. Contains 328302 sequences. (Running on oeis4.)