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A130538
a(n) = exponent x of n needed to obtain A130537(n) = n^(a(n)) + (n+1)^(a(n)+1).
1
0, 1, 0, 1, 0, 2, 1, 1, 0, 1, 0, 1, 5, 1, 0, 15, 0, 1, 1, 1, 0, 3, 1, 3, 1, 2, 0, 9, 0, 1, 3, 12, 23, 1, 0, 2, 1, 1, 0, 1, 0, 5, 1, 1, 0, 3, 1, 2, 1, 2, 0, 1, 1, 1, 1, 6, 0, 1, 0, 3, 23875, 5, 1, 1, 0, 2, 1, 19, 0, 3, 0, 2, 23, 2, 1, 227, 0, 7, 219, 2, 0, 1
OFFSET
1,6
COMMENTS
a(61) > 10000 if it exists. - Jason Yuen, Sep 24 2024
a(61) corresponds to a probable prime. - Jason Yuen, Oct 27 2024
EXAMPLE
a(16)=15 because A130537(16) = 49814113380273715457 = 16^15 + 17^16.
CROSSREFS
Cf. A130537.
Sequence in context: A081400 A328194 A131963 * A276007 A351619 A078659
KEYWORD
nonn,hard,changed
AUTHOR
Tomas Xordan, Jun 02 2007
EXTENSIONS
a(61)-a(82) from Jason Yuen, Oct 27 2024
STATUS
approved