OFFSET
0,2
FORMULA
a(n) = decimal concatenation of n, a(n-1), a(n-2), ..., a(0).
EXAMPLE
a(3) = 32100100 because a(2) = 2100, a(1) = 10 and a(0) = 0 then 3 concatenate a(2), a(1) and a(0).
CROSSREFS
KEYWORD
nonn,base,easy,less
AUTHOR
Eder Vanzei, Oct 14 2019
STATUS
approved