A139320 Values of k in A139319.

2, 1, 1, 1, 4, 1, 2, 1, 2, 3, 4, 1, 8, 3, 4, 2, 4, 3, 2, 4, 4, 5, 6, 1, 6, 7, 4, 5, 6, 3, 2, 4, 4, 3, 10, 2, 2, 3, 6, 5, 4, 4, 6, 6, 4, 5, 6, 1, 2, 9, 10, 6, 4, 5, 8, 4, 4, 6, 6, 4, 8, 7, 4, 3, 6, 3, 6, 4, 12, 6, 4, 5, 14, 6, 8, 2, 4, 6, 2, 6, 8, 5, 4, 6, 12, 7, 6, 11, 16

Offset

1,1

Links

Michel Marcus, Table of n, a(n) for n = 1..1000

Example

For A139319(10) we check: 10*1 - 1= 9, which is not coprime to A139319(4)=3. 10*2 - 1= 19, which is not coprime to A139319(5)=19. But 10*3 - 1 = 29, which is coprime to terms A139319(1) through A139319(9). So a(10) = 3.

Crossrefs

Cf. A139318, A139319.

Sequence in context: A157113 A214712 A213330 * A174204 A118106 A324574

Adjacent sequences: A139317 A139318 A139319 * A139321 A139322 A139323

Keyword

nonn

Author

Leroy Quet, Apr 13 2008

Extensions

More terms from Michel Marcus, Sep 05 2019

New name from Felix Fröhlich, Sep 06 2019

Status

approved