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 A385532 #18 Jul 09 2025 10:17:06 %S A385532 -1,0,0,1,2,2,3,4,4,5,6,6,7,7,8,9,9,10,11,11,12,13,13,14,15,15,16,17, %T A385532 17,18,19,19,20,20,21,22,22,23,24,24,25,26,26,27,28,28,29,30,30,31,31, %U A385532 32,33,33,34,35,35,36,37,37,38,39,39,40,41,41,42,43,43,44 %N A385532 Second prepended column of the tribonacci array of the second kind, A385436. %C A385532 The numbers that occur twice in this sequence are the numbers in A278039. %H A385532 A.H.M. Smeets, <a href="/A385532/b385532.txt">Table of n, a(n) for n = 1..20000</a> %Y A385532 Cf. A278039, A385436. %K A385532 sign %O A385532 1,5 %A A385532 _A.H.M. Smeets_, Jul 02 2025