

A118003


a(n) = largest integer <= n which is coprime to A118002(n1). a(n) = A118002(n)  A118002(n1).


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
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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 := n1 ; 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



