cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A114229 Smallest number m such that A114228(m) = n.

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%I A114229 #5 Oct 31 2013 17:40:36
%S A114229 2,3,34,10,47,20,46,52,221,462,92,77,619,94,319,2176,263,154,700,1980,
%T A114229 1336,928,2477,3243,428,461,2146,4224,1456,2735,3373,5319,6439,4522,
%U A114229 4508,4516,11073,1814,9940,10746,17523,6680,16409,10023,16107,14289
%N A114229 Smallest number m such that A114228(m) = n.
%C A114229 Sequence is defined for all n>=1.
%C A114229 A114228(a(n)) = n and A114228(m) <> n for m < a(n).
%t A114229 Do[ns[k] = 0, {k, 1, 2000}]; n2 = 0; n1 = 1; While[n2 <= 200, n1++; p1 = Prime[n1]; n2 = 1; p2 = 2; While[cp = p1 + 2*p2; ! PrimeQ[cp], n2++; p2 = Prime[n2]]; If[ns[n2] == 0, ns[n2] = n1; Print[n2, "[", n1, "]"]]]; Table[ns[k], {k, 1, n2}]
%o A114229 (Haskell)
%o A114229 import Data.List (elemIndex); import Data.Maybe (fromJust)
%o A114229 a114229 = (+ 2) . fromJust . (`elemIndex` (map a114228 [2..]))
%o A114229 -- _Reinhard Zumkeller_, Oct 31 2013
%Y A114229 Cf. A114228, A114227.
%K A114229 nonn
%O A114229 1,1
%A A114229 _Lei Zhou_, Nov 18 2005
%E A114229 Edited definition to conform to OEIS style. - _Reinhard Zumkeller_, Oct 31 2013