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a(n) is the number of linear orthogonal cellular automata pairs with maximal period 2^2n-1.
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%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