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 A001625 M1304 N0500 #20 Feb 01 2022 23:36:20 %S A001625 2,4,60,1276,41888,1916064,116522048,9069595840,878460379392, %T A001625 103547791177216,14588580791234048,2420219602973093376, %U A001625 466877775127725240320,103607067936116866084864,26204424894484840874483712 %N A001625 Related to Latin rectangles. %D A001625 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 A001625 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A001625 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A001625 S. M. Kerawala, <a href="/A001623/a001623.pdf">The enumeration of the Latin rectangle of depth three by means of a difference equation</a>, Bull. Calcutta Math. Soc., 33 (1941), 119-127. [Annotated scanned copy] %H A001625 <a href="/index/La#Latin">Index entries for sequences related to Latin squares and rectangles</a> %F A001625 a(2) = 2, a(n) = A001626(n) + 2 * A001627(n-1) + 2 * (n-1) * A001624(n-1). - _Sean A. Irvine_, Sep 25 2015 %K A001625 nonn %O A001625 2,1 %A A001625 _N. J. A. Sloane_ %E A001625 More terms from _Sean A. Irvine_, Sep 25 2015