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 A208148 #14 Feb 16 2025 08:33:16 %S A208148 1,16,2187,1048576,1220703125,2821109907456,11398895185373143, %T A208148 73786976294838206464,717897987691852588770249, %U A208148 10000000000000000000000000000,191943424957750480504146841291811,4922235242952026704037113243122008064 %N A208148 Number of n state 1 dimensional radius-1 totalistic cellular automata. %H A208148 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TotalisticCellularAutomaton.html">Totalistic Cellular Automaton</a> %H A208148 <a href="https://oeis.org/wiki/Index_to_OEIS:_Section_Ce#cell">Index entries for sequences related to cellular automata</a> %F A208148 a(n) = n^(3*n-2) = n^A016777(n-1). %e A208148 For n=2, there are 16 totalistic 2-color cellular automaton rules, corresponding to elementary cellular automata numbers 0, 1, 22, 23, 104, 105, 126, 127, 128, 129, 150, 151, 232, 233, 254, and 255. %p A208148 A208148:=n->n^(3*n-2); seq(A208148(n), n=1..30); # _Wesley Ivan Hurt_, Nov 26 2013 %t A208148 Range[30]^(-2 + 3 Range[30]) %Y A208148 Cf. A137840. %K A208148 nonn,easy %O A208148 1,2 %A A208148 _Ben Branman_, Feb 23 2012