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 A277908 #9 Nov 07 2016 09:12:13 %S A277908 2,3,4,5,6,7,14,15,20,21,23,24,33,34,35,36,37,38,43,44,46,47,50,51,60, %T A277908 61,64,65,66,67,76,77,90,91,93,94,103,104,105,106,116,117,127,128,140, %U A277908 141,144,145,147,148,154,155,163,164,167,168,200,201,206,207,215,216,247,248,275,276,285,286,287,288,293,294,295,296,303,304,313,314 %N A277908 Numbers n for which abs(n-A277911(n)) = 1. %H A277908 Antti Karttunen, <a href="/A277908/b277908.txt">Table of n, a(n) for n = 1..7096</a> %F A277908 A007310(a(n)) = A277907(n). %o A277908 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A277908 (define A277908 (MATCHING-POS 1 1 (lambda (n) (= 1 (abs (- n (A277911 n))))))) %Y A277908 Cf. A007310, A277907, A277911. %Y A277908 Bisections: A277909, A277910. %K A277908 nonn %O A277908 1,1 %A A277908 _Antti Karttunen_, Nov 05 2016