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 A380148 #9 Jan 17 2025 09:29:05 %S A380148 1,2,3,4,6,5,8,12,10,15,16,24,20,30,17,32,48,40,60,34,51,9,41,25,49, %T A380148 13,47,28,18,27,50,43,26,23,56,36,64,82,73,123,80,74,93,101,65,128, %U A380148 192,146,219,160,240,186,231,130,195,39,167,103,245,46,142,126,196,35,161,98 %N A380148 Triangle T(n, k), n > 0, k = 1..n, read by rows; T(n, 1) = A380112(n), and for any k in 2..n, T(n, k) = T(n, k-1) XOR T(n-1, k-1) (where XOR denotes the bitwise XOR operator). %C A380148 This sequence corresponds to the XOR difference triangle associated with A380112. All terms are distinct. %H A380148 Rémy Sigrist, <a href="/A380148/a380148.gp.txt">PARI program</a> %e A380148 Triangle T(n, k) begins: %e A380148 1 %e A380148 2 3 %e A380148 4 6 5 %e A380148 8 12 10 15 %e A380148 16 24 20 30 17 %e A380148 32 48 40 60 34 51 %e A380148 9 41 25 49 13 47 28 %e A380148 18 27 50 43 26 23 56 36 %e A380148 64 82 73 123 80 74 93 101 65 %e A380148 128 192 146 219 160 240 186 231 130 195 %o A380148 (PARI) \\ See Links section. %Y A380148 Cf. A099884, A380112. %K A380148 nonn,base,tabl %O A380148 1,2 %A A380148 _Rémy Sigrist_, Jan 13 2025