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.
%I A029709 #29 Apr 30 2024 05:29:10 %S A029709 4,6,8,12,14,19,22,25,27,29,31,38,44,48,50,59,63,65,70,75,78,85,88,90, %T A029709 93,95,112,117,122,131,134,136,143,147,149,151,153,155,159,163,169, %U A029709 181,183,198,207,211,213,224,226,229,235,237,244,247,249,251 %N A029709 Numbers k such that k-th and (k+1)st primes differ by 4. %C A029709 Positions of 4 in A001223. - _Zak Seidov_, Apr 28 2015 %H A029709 N. J. A. Sloane and K. D. Bajpai, <a href="/A029709/b029709.txt">Table of n, a(n) for n = 1..10213</a> (first 56 terms from N. J. A. Sloane) %F A029709 A029710(n) = prime(a(n)). - _R. J. Mathar_, Apr 30 2024 %t A029709 Select[Range[2, 300], 4 == (Prime[# + 1] - Prime[#]) &] (* _Vincenzo Librandi_, Apr 28 2015 *) %o A029709 (Magma) [n: n in [0..300] | NthPrime(n+1) - NthPrime(n) eq 4]; // _Vincenzo Librandi_, Apr 28 2015 %Y A029709 Cf. A023200, A029710, A001223. %K A029709 nonn %O A029709 1,1 %A A029709 _N. J. A. Sloane_