OFFSET
1,2
COMMENTS
This sequence is well-defined.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
Romanian Master in Mathematics Contest, Problem 3, Bucharest, 2007.
MATHEMATICA
spi[n_]:=Module[{m=1}, While[Mod[Floor[7^m/m], n]!=0, m++]; m]; Array[spi, 80] (* Harvey P. Dale, Aug 16 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Max Alekseyev, Mar 09 2008.
STATUS
approved