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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
1, 12, 1213, 12131214, 121312141213121, 12131214121312112131214121312, 12131214121312112131214121312121312141213121121312141213 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..11

CROSSREFS

Cf. A317953, A317954.

Sequence in context: A201642 A177090 A103269 * A033564 A301474 A054351

Adjacent sequences:  A317952 A317953 A317954 * A317956 A317957 A317958

KEYWORD

nonn

AUTHOR

N. J. A. Sloane and Doron Zeilberger, Aug 21 2018

STATUS

approved

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Last modified August 6 12:33 EDT 2020. Contains 336246 sequences. (Running on oeis4.)