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 A222862 #7 Dec 03 2021 18:48:41 %S A222862 2,3,3,6,6,6,10,18,18,10,20,41,108,41,20,36,123,410,410,123,36,74,310, %T A222862 2460,2262,2460,310,74,137,957,11160,22620,22620,11160,957,137,282, %U A222862 2530,70818,156436,452400,156436,70818,2530,282,536,7848,346610,1672630 %N A222862 Table read by antidiagonals: T(n,k) is the number of n X k 0..1 arrays with every row and column least squares fitting to a nonnegative-slope straight line, with a single point array taken as having zero slope. %C A222862 Table starts %C A222862 2, 3, 6, 10, 20, 36, ... %C A222862 3, 6, 18, 41, 123, 310, ... %C A222862 6, 18, 108, 410, 2460, 11160, ... %C A222862 10, 41, 410, 2262, 22620, 156436, ... %C A222862 20, 123, 2460, 22620, 452400, 5631696, ... %C A222862 36, 310, 11160, 156436, 5631696, 113936464, ... %C A222862 74, 957, 70818, 1672630, 123774620, 4591340316, ... %C A222862 137, 2530, 346610, 12777951, 1750579287, 108296570876, ... %C A222862 282, 7848, 2213136, 137893630, 38886003660, 4422968648712, ... %C A222862 536, 21618, 11587248, 1149894920, 616343677120, 119741989131520, ... %C A222862 1100, 67131, 73844100, 12404839040, 13645322944000, ... %C A222862 2117, 188835, 399763695, 108106327001, ... %H A222862 R. H. Hardin, <a href="/A222862/b222862.txt">Table of n, a(n) for n = 1..127</a> %e A222862 Some solutions for n=3, k=4: %e A222862 0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 1 0 %e A222862 0 0 1 0 0 1 1 1 0 1 1 1 0 1 0 1 0 1 0 1 %e A222862 0 1 1 1 0 0 0 1 0 1 1 1 0 1 1 1 0 0 1 1 %K A222862 nonn,tabl %O A222862 1,1 %A A222862 _R. H. Hardin_, Mar 07 2013