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 A001627 M2165 N0862 #18 Feb 01 2022 23:36:59 %S A001627 1,0,2,44,1008,34432,1629280,101401344,8030787968,788377273856, %T A001627 93933191303424,13350759115563520,2231133728986759168, %U A001627 433075048506207645696,96617322164029448916992,24549315871469898190266368,7047652261245574026565877760 %N A001627 Related to Latin rectangles. %D A001627 S. M. Kerawala, The enumeration of the Latin rectangle of depth three by means of a difference equation, Bull. Calcutta Math. Soc., 33 (1941), 119-127. %D A001627 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A001627 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A001627 <a href="/index/La#Latin">Index entries for sequences related to Latin squares and rectangles</a> %F A001627 a(1) = 1, a(n) = A000186(n) + A000186(n-1) + 3*(n-1)*A001626(n-1). - _Sean A. Irvine_, Sep 25 2015 %K A001627 nonn %O A001627 1,3 %A A001627 _N. J. A. Sloane_ %E A001627 More terms from _Sean A. Irvine_, Sep 25 2015