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A245523 Prime numbers whose indices correspond to A245522. 3
5, 31, 47, 47, 127, 167, 2549, 10501, 10501, 10501, 18503, 18503, 171253, 340519, 642049, 642049, 2545453, 2545453, 21826159, 52420561, 71298761, 71298761, 186534311, 989883217, 989883217, 989883217, 10825610021, 13490518247, 13490518247, 13490518247, 80660787143, 80660787143, 143251927909 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Similar to A133590, except the comparison is done in binary.

LINKS

Table of n, a(n) for n=1..33.

FORMULA

a(n) = A000040(A245522(n)).

MATHEMATICA

f[n_] := Module[{p = Prime[n]}, m = IntegerExponent[p - n, 2]; If[n < 2^m, Length[IntegerDigits[n, 2]], m]]; fm = 0; s = {}; Do[f1 = f[n]; If[f1 > fm, s = Join[s, Table[Prime[n], {f1 - fm}]]; fm = f1], {n, 1, 10^6}]; s (* Amiram Eldar, May 13 2019 *)

CROSSREFS

Cf. A245520, A245521, A245522, A133583, A133584, A133589, A133590.

Sequence in context: A162665 A130474 A238674 * A147033 A125743 A332788

Adjacent sequences: A245520 A245521 A245522 * A245524 A245525 A245526

KEYWORD

nonn,base

AUTHOR

Chai Wah Wu, Jul 24 2014

EXTENSIONS

a(23)-a(33) from Amiram Eldar, May 13 2019

STATUS

approved

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Last modified December 2 13:44 EST 2022. Contains 358510 sequences. (Running on oeis4.)