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 A269726 #16 Aug 21 2025 10:00:12 %S A269726 1,8,12,44,55,66,77,88,261,290,319,348,377,406,435,464,493,522,551, %T A269726 580,609,1672,1748,1824,1900,1976,2052,2128,2204,2280,2356,2432,2508, %U A269726 2584,2660,2736,2812,2888,2964,3040,3116,3192,3268,3344,3420,3496,3572,3648 %N A269726 a(n) = row number of extended Wythoff array (see A035513) which contains the sequence n times the Lucas numbers 1,3,4,7,11,18,... (A000204). %D A269726 J. H. Conway, Posting to Math Fun Mailing List, Dec 02 1996. %F A269726 a(n) = A220249(n)-1. - _R. J. Mathar_, May 06 2017 %F A269726 a(n) = A357097(a(1), A269725(n)), where we write a(1) here to emphasize the semantics of the relationship. - _Peter Munn_, Aug 21 2025 %Y A269726 Cf. A000045, A035513, A269725, A357097. %K A269726 nonn,easy,changed %O A269726 1,2 %A A269726 _N. J. A. Sloane_, Mar 07 2016