A200582 a(n) = gcd(t(n), t(n-1)), where t is A200218.

297, 36531, 548111421, 67965852735, 1019760202547361, 126450333081725499, 1897261817318411934357, 235260591797816161585767, 3529851816596251006844782425, 437701860518526922664914606467, 6567282245071794543915385600213293, 814343436090763041972430479341054799

Offset: 1

Author

Artur Jasinski, Nov 19 2011

Keywords

• nonn

Comments

This sequence allows us to find periods in A200218 and understand better A200218 and whole Danilov sequence.

Crossrefs

Cf. A200218, A200581.