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A118003 a(n) = largest integer <= n which is coprime to A118002(n-1). a(n) = A118002(n) - A118002(n-1). 2
1, 2, 2, 4, 5, 5, 7, 7, 8, 10, 11, 11, 13, 13, 14, 16, 17, 17, 19, 19, 20, 22, 23, 23, 25, 25, 26, 28, 29, 29, 31, 31, 32, 34, 35, 35, 37, 37, 38, 40, 41, 41, 43, 43, 44, 46, 47, 47, 49, 49, 50, 52, 53, 53, 55, 55, 56, 58, 59, 59, 61, 61, 62, 64, 65, 65, 67, 67, 68, 70, 71, 71 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..72.

MAPLE

A118002 := proc(nmax) local a, n ; a := [0] ; while nops(a) < nmax do n := nops(a) ; while gcd(n, op(-1, a)) <> 1 do n := n-1 ; od ; a := [op(a), op(-1, a)+n] ; od ; RETURN(a) ; end: a118002 := A118002(100) : for n from 1 to nops(a118002)-1 do printf("%d, ", op(n+1, a118002)-op(n, a118002)) ; od ; # R. J. Mathar, Jun 06 2007

CROSSREFS

Cf. A118001, A118002.

Sequence in context: A319409 A122543 A334149 * A159296 A277191 A335129

Adjacent sequences:  A118000 A118001 A118002 * A118004 A118005 A118006

KEYWORD

nonn

AUTHOR

Leroy Quet, Apr 09 2006

EXTENSIONS

More terms from R. J. Mathar, Jun 06 2007

STATUS

approved

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Last modified July 26 22:10 EDT 2021. Contains 346300 sequences. (Running on oeis4.)