A200581 a(n) = gcd(t(n), t(2*n)), where t = A200218.

297, 4456485, 552604437, 8291281429233, 1028119449829329, 15425912516520681549, 1912814180168014341405, 28699879385153403699122169, 3558786956573202226705490361, 53396068196303711362892876498613, 6621116015128616782200943391318373

Offset

1,1

Comments

Successive records in GCD of A200218 occurred between A200218(n) and A200218(2*n). Also, A200582 shows big increases in GCD for A200218(n) and A200218(2*n-1).

Links

Table of n, a(n) for n=1..11.

Crossrefs

Cf. A200218, A200582.

Sequence in context: A281132 A200855 A200582 * A200218 A284156 A234665

Adjacent sequences: A200578 A200579 A200580 * A200582 A200583 A200584

Keyword

nonn

Author

Artur Jasinski, Nov 19 2011

Status

approved