

A128193


First differences of values of n for Cullen primes in A005849.


1



140, 4572, 1082, 816, 11885, 13796, 177, 27187, 31169, 171594, 98856, 120624, 872929, 4973720, 351333
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OFFSET

1,1


COMMENTS

Carlos Rivera's Problem 50 is devoted to this topic. If we pair differences according to magnitude, we first obtain 177140=37 a prime. This raises the question as to whether there are other such prime values.


LINKS



FORMULA



EXAMPLE

a(1)=140 because the first pair of n are 1 and 141. 141  1 = 140.


CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



