A246496 Smallest k such that 8^^n is not congruent to 8^^(n-1) mod k, where 8^^n denotes the power tower 8^8^...^8 (in which 8 appears n times).

2, 3, 11, 23, 47, 283, 719, 1439, 2879, 34549, 138197, 1266767, 14920303

Offset

1,1

Comments

For general remarks regarding sequences of this type, see A246491.

Links

Table of n, a(n) for n=1..13.

Prog

(SageMath) # Use linked source from A246491 with this command: find_k_values(8, 1, 1)

Crossrefs

Cf. A027763, A056637, A246491, A246492, A246493, A246494, A246495, A246497.

Large overlap with A056637.

Sequence in context: A040994 A141123 A263729 * A119641 A252005 A074496

Adjacent sequences: A246493 A246494 A246495 * A246497 A246498 A246499

Keyword

nonn,more

Author

Wayne VanWeerthuizen, Aug 27 2014

Status

approved