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 A249681 #12 Jun 24 2024 22:27:07 %S A249681 2,4,8,6,10,16,14,22,12,18,20,26,28,32,38,34,44,40,24,30,36,46,52,56, %T A249681 50,58,62,64,68,74,48,42,54,60,70,76,82,86,80,88,92,94,98,100,104,66, %U A249681 72,78,84,96,90,106,112,110,116,118,122,124,128,134,136,142,130 %N A249681 A084937(3n+2). %H A249681 Reinhard Zumkeller, <a href="/A249681/b249681.txt">Table of n, a(n) for n = 0..10000</a> %o A249681 (Haskell) %o A249681 a249681 = a084937 . (+ 2) . (* 3) -- _Reinhard Zumkeller_, Nov 04 2014 %Y A249681 Cf. A084937, A249680-A249683. %K A249681 nonn %O A249681 0,1 %A A249681 _N. J. A. Sloane_, Nov 03 2014