OFFSET
1,1
COMMENTS
The sequence is motivated by the fact that numbers whose decimal expansion is a permutation of 123456, are all of the form 9k+3.
There are 6!=720 terms in this finite sequence.
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..720 (full sequence)
FORMULA
a(n) + a(6!+1-n) = 86419.
a(n) == 0, 1, 2, 7, 8 or 9 (mod 10).
PROG
CROSSREFS
KEYWORD
fini,full,nonn,base,easy
AUTHOR
M. F. Hasler, May 28 2010
STATUS
approved