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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
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
CROSSREFS
Sequence in context: A201642 A177090 A103269 * A033564 A301474 A054351
KEYWORD
nonn
AUTHOR
STATUS
approved