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 A261087 #8 Mar 30 2017 21:59:12 %S A261087 83,127,227,281,307,367,443,541,631,677,853,863,967,1091,1217,1427, %T A261087 1451,1487,1523,1667,1787,1861,1997,2027,2153,2207,2297,2339,2411, %U A261087 2477,2543,2693,2711,2837,2909,2963,3089,3251,3313,3323,3467,3533,3593,3677,3719,3797,3863,3917,3989,4007,4019,4091,4259,4447,4493,4643,4657,4783,4787,4799,4877,4937,5087,5119,5441 %N A261087 Primes p for which A155043(p) < A155043(prevprime(p)), where A155043 gives the number of steps needed to reach zero when repeatedly applying the map that replaces k with k - A000005(k). %H A261087 Antti Karttunen, <a href="/A261087/b261087.txt">Table of n, a(n) for n = 1..10000</a> %F A261087 a(n) = A000040(A261086(n)). %e A261087 A155043(83) = 16 although A155043(79) = 26, thus 83 is included in this sequence. %o A261087 (Scheme) (define (A261087 n) (A000040 (A261086 n))) %Y A261087 Cf. A000005, A000040, A155043, A261085, A261086. %K A261087 nonn %O A261087 1,1 %A A261087 _Antti Karttunen_, Sep 23 2015