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A246494 Smallest k such that 6^^n is not congruent to 6^^(n-1) mod k, where 6^^n denotes the power tower 6^6^...^6 (in which 6 appears n times). 5
2, 4, 13, 47, 107, 643, 1439, 2879, 34549, 138197, 858239, 2029439, 36449279 (list; graph; refs; listen; history; text; internal format)
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

(Sage, cython) Use linked source from A246491 with this command: find_k_values(6, 1, 1)

CROSSREFS

Cf. A027763, A246491, A246492, A246493, A246495, A246496, A246497

Sequence in context: A284107 A184177 A005164 * A268951 A290722 A058134

Adjacent sequences:  A246491 A246492 A246493 * A246495 A246496 A246497

KEYWORD

nonn,more

AUTHOR

Wayne VanWeerthuizen, Aug 27 2014

STATUS

approved

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Last modified November 21 16:04 EST 2019. Contains 329371 sequences. (Running on oeis4.)