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 A135997 #27 Sep 26 2024 04:12:57 %S A135997 0,2,1,1,1,0,2,0,-1,3,-1,-2,4,-2,-3,5,-3,-4,6,-4,-5,7,-5,-6,8,-6,-7,9, %T A135997 -7,-8,10,-8,-9,11,-9,-10,12,-10,-11,13,-11,-12,14,-12,-13,15,-13,-14, %U A135997 16,-14,-15,17,-15,-16,18,-16,-17,19,-17,-18,20,-18,-19,21,-19,-20,22,-20,-21,23 %N A135997 Table of triples T(k,m) = k (m=1), 2-k (m=2) and 1-k (m=3). %H A135997 Michael De Vlieger, <a href="/A135997/b135997.txt">Table of n, a(n) for n = 0..9002</a> (rows 1 <= k <= 3000) %e A135997 The table has 3 columns and starts: %e A135997 0, 2, 1; %e A135997 1, 1, 0; %e A135997 2, 0,-1; %e A135997 3,-1,-2; %t A135997 Array[{#, 2 - #, 1 - #} &, 24, 0] // Flatten (* _Michael De Vlieger_, Oct 01 2017 *) %Y A135997 Cf. A022959 (row sums). %K A135997 sign,tabf,less,easy %O A135997 0,2 %A A135997 _Paul Curtz_, Mar 03 2008 %E A135997 Edited and extended by _R. J. Mathar_, Jul 22 2008