OFFSET
1,2
LINKS
EXAMPLE
A288921(1) = 1, hence a(1) = 1.
A288921(2) = 1260, hence a(1260) = 2.
A288921(3) = 2, hence a(2) = 3.
A288921(4) = 630, hence a(630) = 4.
A288921(5) = 4, hence a(4) = 5.
A288921(6) = 315, hence a(315) = 6.
A288921(7) = 8, hence a(8) = 7.
A288921(8) = 180, hence a(180) = 8.
A288921(9) = 7, hence a(7) = 9.
A288921(10) = 240, hence a(240) = 10.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Jun 19 2017
STATUS
approved