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 A317955 Apply the morphism 1 -> 12, 2 -> 13, 3 -> 14, 4 -> 1 n times to 1, and concatenate the resulting string. 2

%I

%S 1,12,1213,12131214,121312141213121,12131214121312112131214121312,

%T 12131214121312112131214121312121312141213121121312141213

%N Apply the morphism 1 -> 12, 2 -> 13, 3 -> 14, 4 -> 1 n times to 1, and concatenate the resulting string.

%C a(n) is the concatenation a(n) = a(n-1).a(n-2).a(n-3).a(n-4) for n >= 5.

%H Seiichi Manyama, <a href="/A317955/b317955.txt">Table of n, a(n) for n = 1..11</a>

%Y Cf. A317953, A317954.

%K nonn

%O 1,2

%A _N. J. A. Sloane_ and _Doron Zeilberger_, Aug 21 2018

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Last modified December 1 16:09 EST 2022. Contains 358468 sequences. (Running on oeis4.)