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A237267 The positions of records in A236747. 0

%I #17 Feb 23 2014 09:59:57

%S 1,2,5,105,585,1041,1590,3582,5460,19425,21450,21540,33495,42315,

%T 101745,122265,151710,176190,252525,267435,318780,343800,464100,

%U 542640,868140,996765,1080450,1217370,1322685,1461495,1477875,1601985,2523675,2792790,3512145

%N The positions of records in A236747.

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

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

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

%K nonn

%O 1,2

%A _Antti Karttunen_ and _Juri-Stepan Gerasimov_, Feb 05 2014

%E a(7)-a(9) from _Michel Marcus_, Feb 05 2014.

%E a(9)-a(35) from _Giovanni Resta_, Feb 09 2014

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)