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A132261
Main diagonal of array in A132260.
1
13, 107, 101, 491, 8039, 9349
OFFSET
1,1
FORMULA
a(n) = A[n,n+2] = n-th prime p such that 2^2^(n+2) + p^2^(n+2) is prime.
EXAMPLE
a(1) = 13 because 13 is the first prime p such that 2^2^3 + p^2^3 is prime.
a(2) = 107 because 107 is the 2nd prime p such that 2^2^4 + p^2^4 is prime.
a(3) = 101 because 101 is the 3rd prime p such that 2^2^5 + p^2^5 is prime.
KEYWORD
more,nonn
AUTHOR
Jonathan Vos Post, Aug 15 2007
STATUS
approved