A068895 a(1) = 1; a(n) is the smallest cube which is congruent to 1 mod a(n-1).

1, 8, 729, 14526784, 10557204381300759489, 43579578335427493547511368128557118597314764434646474944

Offset

1,2

Links

Table of n, a(n) for n=1..6.

Example

a(3) = 729 = 9^3 = 91*a(2) + 1 where a(2) = 8=2^3 = 7*1 + 1.

Crossrefs

Cf. A068894.

Sequence in context: A268250 A268106 A023813 * A115590 A134923 A144230

Adjacent sequences: A068892 A068893 A068894 * A068896 A068897 A068898

Keyword

nonn

Author

Amarnath Murthy, Mar 20 2002

Extensions

a(5) from Donovan Johnson, Mar 10 2010

a(6) from Sean A. Irvine, Mar 23 2024

Status

approved