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A237267 The positions of records in A236747. 0
1, 2, 5, 105, 585, 1041, 1590, 3582, 5460, 19425, 21450, 21540, 33495, 42315, 101745, 122265, 151710, 176190, 252525, 267435, 318780, 343800, 464100, 542640, 868140, 996765, 1080450, 1217370, 1322685, 1461495, 1477875, 1601985, 2523675, 2792790, 3512145 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Smallest k such that A236747(k) = n: 1, 2, 5, 105, 585, 1041, 1590, 3582, 6870, 5460,...

Smallest prime p such that A236747(p) = n: 2, 5, 593, 1889, 4457,...

LINKS

Table of n, a(n) for n=1..35.

CROSSREFS

Cf. A236747 (number of 0 <= k <= sqrt(n) such that n-k and n+k are both prime).

Sequence in context: A276110 A136106 A122696 * A266284 A215572 A023263

Adjacent sequences:  A237264 A237265 A237266 * A237268 A237269 A237270

KEYWORD

nonn

AUTHOR

Antti Karttunen and Juri-Stepan Gerasimov, Feb 05 2014

EXTENSIONS

a(7)-a(9) from Michel Marcus, Feb 05 2014.

a(9)-a(35) from Giovanni Resta, Feb 09 2014

STATUS

approved

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Last modified February 25 08:15 EST 2020. Contains 332221 sequences. (Running on oeis4.)