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 A354486 #13 Feb 16 2025 08:34:03 %S A354486 2,3,2,7,3,3,23,5,5,3,59,11,9,5,4,314,37,23,9,7,4,1529,83,75,17,13,7, %T A354486 5,8209,274,421,41,25,13,9,5,83313,1217,1103,137,61,25,17,9,6,620297, %U A354486 6161,5047,769,187,49,33,17,11,6 %N A354486 Triangle read by rows: T(n,k) is the numerator of the n-th term of the Somos-k sequence, 4 <= k <= n. %H A354486 Pontus von Brömssen, <a href="/A354486/b354486.txt">Rows n = 4..36, flattened</a> %H A354486 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SomosSequence.html">Somos Sequence</a> %H A354486 Wikipedia, <a href="https://en.wikipedia.org/wiki/Somos_sequence">Somos sequence</a> %e A354486 Triangle begins: %e A354486 n\k| 4 5 6 7 8 9 10 11 12 %e A354486 ---+----------------------------------- %e A354486 4 | 2 %e A354486 5 | 3 2 %e A354486 6 | 7 3 3 %e A354486 7 | 23 5 5 3 %e A354486 8 | 59 11 9 5 4 %e A354486 9 | 314 37 23 9 7 4 %e A354486 10 | 1529 83 75 17 13 7 5 %e A354486 11 | 8209 274 421 41 25 13 9 5 %e A354486 12 | 83313 1217 1103 137 61 25 17 9 6 %Y A354486 Cf. A354487 (denominators). %Y A354486 Columns 4-7 are A006720-A006723 (without the initial 1's). %K A354486 nonn,tabl,frac %O A354486 4,1 %A A354486 _Pontus von Brömssen_, May 28 2022