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 A056410 #6 Aug 22 2017 20:53:11 %S A056410 0,0,0,0,0,1,4,83,454,5761,17998,334796,777107,10574991,52611728, %T A056410 342198939,1094122103,18448004164,38504610244,538330828006, %U A056410 2215487105213,16330536692133,45407723468330 %N A056410 Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly six different symbols. %C A056410 See A056371 for an explanation of step shifts. Permuting the symbols will not change the structure. %D A056410 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 A056410 A056405(n)-A056404(n). %Y A056410 Cf. A056390. %K A056410 nonn %O A056410 1,7 %A A056410 _Marks R. Nester_