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 A346595 #21 Aug 07 2021 08:54:55 %S A346595 1,2,5,4,12,40,51,31,9,144,564,904,769,376,106,16,2880,12576,23300, %T A346595 24080,15345,6273,1650,270,25,86400,408960,840216,991276,748530, %U A346595 381065,133848,32523,5370,575,36,3628800,18299520,40691952,52965360,45165064,26726896,11323991,3487055,782187,126483,14357,1085,49 %N A346595 Successive numbers arising from the Moessner construction of the sequence A010790 (n!*(n+1)!) on pages 64, 65 of Conway-Guy's "Book of Numbers". %C A346595 The circled numbers 5, 31, 106, 270, 575, 1085, ... in the second row of the display at the foot of page 64 are (essentially) A212523. %C A346595 This sequence can also be represented as a triangle of numbers where the rows have lengths 1, 3, 5, 7, ... - _Jinyuan Wang_, Aug 06 2021 %D A346595 J. H. Conway and R. K. Guy, The Book of Numbers, Copernicus Press, NY, 1996. Sequence can be obtained by reading the successive circled numbers in the tableau at the foot of page 64. %e A346595 As a triangle, this is: %e A346595 1, %e A346595 2, 5, 4, %e A346595 12, 40, 51, 31, 9, %e A346595 144, 564, 904, 769, 376, 106, 16, %e A346595 2880, 12576, 23300, 24080, 15345, 6273, 1650, 270, 25, %e A346595 86400, 408960, 840216, 991276, 748530, 381065, 133848, 32523, 5370, 575, 36, %e A346595 ... %Y A346595 Cf. A010790, A125714, A212523, A346004, A346005, A346006, A346007. %K A346595 nonn,tabf %O A346595 1,2 %A A346595 _N. J. A. Sloane_, Jul 25 2021 %E A346595 More terms from _Jinyuan Wang_, Aug 06 2021