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 A337661 #14 Oct 05 2020 02:01:59 %S A337661 1,2,4,5,10,25,7,14,35,49,15,30,75,105,225,22,44,110,154,330,484,31, %T A337661 62,155,217,465,682,961,50,100,250,350,750,1100,1550,2500,68,136,340, %U A337661 476,1020,1496,2108,3400,4624,90,180,450,630,1350,1980,2790,4500,6120,8100 %N A337661 Triangular array read by rows: T(n,k) = A337655(n) * A337655(k), for 1 <= k <= n. %C A337661 This is the lower triangular part of the multiplication table from A337655, read by rows. %H A337661 Peter Kagey, <a href="/A337661/b337661.txt">Table of n, a(n) for n = 1..10011</a> (first 141 rows, flattened) %e A337661 The multiplication table from A337655 begins: %e A337661 1, 2, 5, 7, 15, 22, 31, 50, 68, 90, ... %e A337661 2, 4, 10, 14, 30, 44, 62, 100, 136, 180, ... %e A337661 5, 10, 25, 35, 75, 110, 155, 250, 340, 450, ... %e A337661 7, 14, 35, 49, 105, 154, 217, 350, 476, 630, ... %e A337661 15, 30, 75, 105, 225, 330, 465, 750, 1020, 1350, ... %e A337661 22, 44, 110, 154, 330, 484, 682, 1100, 1496, 1980, ... %e A337661 31, 62, 155, 217, 465, 682, 961, 1550, 2108, 2790, ... %e A337661 50, 100, 250, 350, 750, 1100, 1550, 2500, 3400, 4500, ... %e A337661 68, 136, 340, 476, 1020, 1496, 2108, 3400, 4624, 6120, ... %e A337661 90, 180, 450, 630, 1350, 1980, 2790, 4500, 6120, 8100, ... %e A337661 ... %Y A337661 Cf. A337655, A337659, A337660, A337662. %K A337661 nonn,tabl %O A337661 1,2 %A A337661 _N. J. A. Sloane_, Oct 03 2020