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 A132379 #2 Feb 27 2009 03:00:00 %S A132379 1,1,4,1,5,12,1,6,17,1,7,23,49,80,1,8,30,72,129,192,1,9,38,102,201, %T A132379 321,448,1,10,47,140,303,522,769,1024,1,11,57,187,443,825,1291,1785, %U A132379 2304,1,12,68,244,630,1268,2116,3076,4089,5120 %N A132379 Array read by columns down to the main diagonal where the first element in row n is n and element k+1 in row n is the sum of element k in row n and element k-1 in row n-1. %e A132379 The array begins: %e A132379 (1) 1 1 1 1 1 1 1... %e A132379 (2 3) 4 5 6 7 8 9... %e A132379 (3 5 8) 12 17 23 30 38... %e A132379 (4 7 12 20)32 49 72 102... %e A132379 (5 9 16 28 48)80 129 201..., %e A132379 each term being the sum of the number to its left and the number to its top right. Terms in parentheses are given in sequence A053218, the rest included in this sequence. %Y A132379 Cf. A053218. %K A132379 nonn,tabl %O A132379 1,3 %A A132379 Jonathan R. Love (japanada11(AT)yahoo.ca), Nov 20 2007