

A132260


Array T[k,n] = nth prime p such that 2^2^k + p^2^k is prime, k>2, read by antidiagonals.


1



13, 89, 137, 29, 107, 223, 37, 59, 127, 331, 113, 53, 101, 139, 389, 113, 223, 181, 103, 173, 491
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OFFSET

1,1


COMMENTS

These were computed by Ignacio Larrosa CaĆ±estro, who cautions that some are only probable primes. The k=3 row is A132216. The main diagonal is A132261.


LINKS

Table of n, a(n) for n=1..21.


EXAMPLE

The array begins:
.n....1....2....3....4....5....6...7...8...9..10...
k=3...13..137..223..331..389..491.563.647.701.773...
k=4...89..107..127..139..173..179.229.233.349.421...
k=5...29...59..101..103..109..181.199.379.769.881...
k=6...37...53..181..491..547..619.661.677.911.941...
k=7..113..223.5279.7517.8039.9833...
k=8..113.1223.1277.1993.2399.9349.9739...


CROSSREFS

Cf. A000040, A001016, A050997, A120398, A122616, A130873, A130555, A132214, A132215, A132216.
Sequence in context: A228481 A277512 A141878 * A181508 A082099 A282858
Adjacent sequences: A132257 A132258 A132259 * A132261 A132262 A132263


KEYWORD

more,nonn,tabl


AUTHOR

Jonathan Vos Post, Aug 15 2007


STATUS

approved



