%I #11 Oct 03 2021 18:54:56
%S 1,1,3,15,42,181,572,1872,5899
%N a(n) is the number of linear orthogonal cellular automata pairs with maximal period 2^2n-1.
%H Luca Mariot, <a href="https://arxiv.org/abs/2106.07750">Hip to Be (Latin) Square: Maximal Period Sequences from Orthogonal Cellular Automata</a>, arXiv:2106.07750 [cs.CR], 2021, see p. 13.
%Y Cf. A002450, A024036.
%K nonn,more
%O 3,3
%A _Michael De Vlieger_, Oct 01 2021