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A326295
a(n) = decimal concatenation of n,a(n-1),a(n-2),...,a(1).
1
1, 21, 3211, 43211211, 5432112113211211, 65432112113211211432112113211211, 7654321121132112114321121132112115432112113211211432112113211211
OFFSET
1,2
FORMULA
a(n) = decimal concatenation of n,a(n-1),a(n-2),...,a(1).
EXAMPLE
a(3) = 3211 because a(2) = 21 and a(1)=1 then 3 concatenate a(2) and a(1).
CROSSREFS
Sequence in context: A018238 A189447 A098724 * A078395 A340331 A370085
KEYWORD
base,easy,nonn
AUTHOR
Eder Vanzei, Sep 10 2019
STATUS
approved