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A132261 Main diagonal of array in A132260. 1
13, 107, 101, 491, 8039, 9349 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

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.

CROSSREFS

Cf. A000040, A001016, A050997, A120398, A122616, A130873, A130555, A132214, A132215, A132216, A132260.

Sequence in context: A295249 A295648 A218093 * A142364 A164301 A322499

Adjacent sequences:  A132258 A132259 A132260 * A132262 A132263 A132264

KEYWORD

more,nonn

AUTHOR

Jonathan Vos Post, Aug 15 2007

STATUS

approved

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Last modified June 25 10:04 EDT 2022. Contains 354844 sequences. (Running on oeis4.)