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A246497
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Smallest k such that 9^^n is not congruent to 9^^(n-1) mod k, where 9^^n denotes the power tower 9^9^...^9 (in which 9 appears n times).
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7
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3, 7, 23, 47, 283, 719, 1439, 2879, 34549, 138197, 1266767, 14619833, 36449279, 377982107, 1432349099
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OFFSET
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1,1
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COMMENTS
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For general remarks regarding sequences of this type, see A246491.
This particular sequence shares all known terms with A082449. they might be identical.
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LINKS
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PROG
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(Sage, cython) Use linked source from A246491 with this command: find_k_values(9, 1, 1)
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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