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A255481
a(n) = gcd(b(n),b(n-1)), where b(n) = A255582(n).
3
1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 2, 2, 2, 1, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 3, 3, 3, 2, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 3, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1
OFFSET
2,4
COMMENTS
By definition, a(n) <= A255480(n) for n >= 4.
LINKS
PROG
(Haskell)
a255481 n = a255481_list !! (n-1)
a255481_list = zipWith gcd a255582_list $ tail a255582_list
-- Reinhard Zumkeller, Mar 10 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 28 2015
STATUS
approved