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 A328071 #20 Oct 09 2019 12:38:59 %S A328071 1,2,3,4,6,9,-14,-10,-4,5,35,21,11,7,12,-76,-41,-20,-9,-2,10,161,85, %T A328071 44,24,15,13,23,-357,-196,-111,-67,-43,-28,-15,8,831,474,278,167,100, %U A328071 57,29,14,22,-1955,-1124,-650,-372,-205,-105,-48,-19,-5,17,4508,2553 %N A328071 Difference triangle for A327460 read by upwards antidiagonals. %C A328071 By definition, all terms are distinct. %C A328071 Conjecture: every positive number appears. (Probably false, see next comment. - _N. J. A. Sloane_, Oct 09 2019) %C A328071 239, 776, 2470, and 7805 are the smallest numbers that do not appear in the first 10^4, 10^5, 10^6, and 10^7 terms respectively. - _Peter Kagey_, Oct 05 2019. (In other words, 239, 776, 2470, and 7805 probably will never appear. - _N. J. A. Sloane_, Oct 09 2019) %H A328071 Peter Kagey, <a href="/A328071/b328071.txt">Table of n, a(n) for n = 1..10011</a> (first 141 antidiagonals, flattened) %e A328071 The difference triangle for A327460 begins: %e A328071 1, 3, 9, 5, 12, 10, 23, 8, ... %e A328071 2, 6, -4, 7, -2, 13, -15, ... %e A328071 4, -10, 11, -9, 15, -28, ... %e A328071 -14, 21, -20, 24, -43, ... %e A328071 35, -41, 44, -67, ... %e A328071 -76, 85, -111, ... %e A328071 161, -196, ... %e A328071 -357, ... %e A328071 ... %e A328071 Read this by upwards antidiagonals. %Y A328071 Has the same relation to A327460 as A235539 does to A239538. %K A328071 sign,tabl %O A328071 1,2 %A A328071 _N. J. A. Sloane_, Oct 05 2019 %E A328071 Terms a(29) and beyond from _Peter Kagey_, Oct 05 2019