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A113924 a(n) = gcd(A113605(n+1), A113605(n)). Also, for n >= 2, a(n) = A113605(n+2) - A113605(n-1). 1
1, 1, 1, 2, 1, 3, 1, 1, 4, 1, 1, 5, 1, 2, 1, 1, 1, 1, 8, 1, 3, 1, 1, 2, 1, 1, 1, 11, 2, 1, 1, 1, 1, 2, 1, 1, 5, 1, 4, 1, 1, 1, 1, 2, 19, 1, 1, 1, 10, 1, 7, 3, 1, 2, 1, 1, 1, 1, 6, 1, 1, 1, 5, 6, 1, 1, 1, 1, 2, 1, 3, 7, 1, 4, 1, 1, 1, 5, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..80.

MAPLE

A113605 := proc(n) option remember ; if n <=3 then 1 ; else A113605(n-3)+gcd(A113605(n-1), A113605(n-2)) ; fi ; end: A113924 := proc(n) gcd(A113605(n+1), A113605(n)) ; end; seq(A113924(n), n=1..80) ; # R. J. Mathar, Jan 31 2008

CROSSREFS

Cf. A113605.

Sequence in context: A130296 A126705 A263646 * A335124 A262891 A178340

Adjacent sequences:  A113921 A113922 A113923 * A113925 A113926 A113927

KEYWORD

more,nonn

AUTHOR

Leroy Quet, Jan 30 2006

EXTENSIONS

More terms from R. J. Mathar, Jan 31 2008

STATUS

approved

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Last modified August 10 12:39 EDT 2020. Contains 336379 sequences. (Running on oeis4.)