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 A273435 #6 May 29 2016 07:33:13 %S A273435 1,30,745,18515,484729,13591116,409987640,13303809750,463397746636, %T A273435 17276343754098,687247936771032,29079485483123985,1304889365985201424, %U A273435 61922948839969015928,3099416199490785094272,163229892984351540698188,9024648860521246301700096 %N A273435 Number of endofunctions on [n] with exactly four cycles. %H A273435 Alois P. Heinz, <a href="/A273435/b273435.txt">Table of n, a(n) for n = 4..386</a> %F A273435 E.g.f.: 1/24 * log(1+LambertW(-x))^4. %Y A273435 Column k=4 of A060281. %K A273435 nonn %O A273435 4,2 %A A273435 _Alois P. Heinz_, May 22 2016