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 A014630 #17 Jul 02 2025 16:01:55 %S A014630 1,4,11,26,66,57,302,120,1191,2416,247,4293,15619,502,14608,88234, %T A014630 156190,1013,47840,455192,1310354,2036,152637,2203488,9738114, %U A014630 15724248,4083,478271,10187685,66318474,162512286,8178,1479726,45533450,423281535,1505621508,2275172004 %N A014630 Distinct elements occurring in triangle of Eulerian numbers (unsorted). %C A014630 It appears that no term other than 1 appears on different rows of A008292. If so, row n contains floor((n-1)/2) terms for n >= 2. - _Pontus von Brömssen_, Jul 20 2024 %e A014630 As an irregular triangle: %e A014630 n\k| 1 2 3 4 5 6 %e A014630 ----+----------------------------------------------------------- %e A014630 1 | 1 %e A014630 2 | (no terms) %e A014630 3 | 4 %e A014630 4 | 11 %e A014630 5 | 26 66 %e A014630 6 | 57 302 %e A014630 7 | 120 1191 2416 %e A014630 8 | 247 4293 15619 %e A014630 9 | 502 14608 88234 156190 %e A014630 10 | 1013 47840 455192 1310354 %e A014630 11 | 2036 152637 2203488 9738114 15724248 %e A014630 12 | 4083 478271 10187685 66318474 162512286 %e A014630 13 | 8178 1479726 45533450 423281535 1505621508 2275172004 %e A014630 14 | 16369 4537314 198410786 2571742175 12843262863 27971176092 %Y A014630 Cf. A008292, A030196. %K A014630 nonn,tabf,easy %O A014630 1,2 %A A014630 _Mohammad K. Azarian_ %E A014630 More terms from _James Sellers_