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 A353983 #7 May 18 2022 10:06:05 %S A353983 3,4,6,9,12,13,28,31,34,59,62,65,90,145,297,328,673,1001,1298,2134, %T A353983 3432,4433,7501,11934,15366,26624,41990,53924,95302,149226,191216, %U A353983 343672,534888,684114,1247426,1931540,2466428,4553977,7020405,8951945,16710880,25662825 %N A353983 Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a Catalan number (A000108). %C A353983 The sequence is well defined: %C A353983 - a(1) = 3, %C A353983 - for n > 0, let k be such that A000108(k) + 1 + a(1) + ... + a(n) < A000108(k+1), %C A353983 - then a(n+1) <= A000108(k) + 1. %H A353983 Rémy Sigrist, <a href="/A353983/a353983.txt">C++ program</a> %o A353983 (C++) See Links section. %Y A353983 See A353889 for similar sequences. %Y A353983 Cf. A000108, A353984, A353985. %K A353983 nonn %O A353983 1,1 %A A353983 _Rémy Sigrist_, May 13 2022