A337007 a(n) = gcd(b(n),b(n+1)), where b(n) = A336957(n).

1, 2, 3, 5, 7, 2, 3, 11, 5, 2, 3, 7, 11, 2, 5, 3, 13, 2, 7, 3, 17, 2, 19, 3, 23, 2, 5, 13, 7, 6, 5, 17, 7, 8, 3, 5, 19, 4, 3, 29, 5, 2, 11, 3, 31, 2, 13, 3, 35, 2, 29, 3, 37, 2, 17, 3, 41, 2, 5, 23, 7, 12, 5, 31, 7, 2, 3, 43, 5, 2, 3, 47, 5, 22, 3, 7, 19, 8, 9, 5, 7, 2, 13, 11

Offset

1,2

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..20000

Example

A336957(3)=6, A336957(4) = 15, gcd(6,15) = 3 = a(3).

Crossrefs

Cf. A336957, A337008.

Sequence in context: A139751 A076779 A337008 * A074464 A074463 A038194

Adjacent sequences: A337004 A337005 A337006 * A337008 A337009 A337010

Keyword

nonn

Author

Scott R. Shannon and N. J. A. Sloane, Aug 11 2020.

Status

approved