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 A056317 #10 Aug 22 2017 20:53:08 %S A056317 6,15,120,645,3990,23295,140610,839790,5042610,30232965,181421850, %T A056317 1088390415,6530486970,39182081385,235093327980,1410554953080, %U A056317 8463334761210,50779978307010,304679900238330 %N A056317 Number of primitive (aperiodic) reversible strings with n beads using a maximum of six different colors. %C A056317 A string and its reverse are considered to be equivalent. %D A056317 M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia. [See A056391 for pdf file of Chap. 2] %F A056317 sum mu(d)*A056308(n/d) where d|n. %Y A056317 Column 6 of A284871. %Y A056317 Cf. A045625. %K A056317 nonn %O A056317 1,1 %A A056317 _Marks R. Nester_