A246492 - OEIS

A246492

Smallest k such that 4^^n is not congruent to 4^^(n-1) mod k, where 4^^n denotes the power tower 4^4^...^4 (in which 4 appears n times).

2, 5, 11, 23, 47, 283, 719, 1439, 2879, 34549, 138197, 1266767, 4782969, 14348907

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OFFSET

1,1

COMMENTS

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

LINKS

PROG

(Sage, cython) Use linked source from A246491 with this command: find_k_values(4, 1, 1)

CROSSREFS

KEYWORD

nonn,more

AUTHOR

STATUS

approved