A115050 Numbers n such that in the 3 X 3 square arrangement of the 9 primes p(n),..,p(n+8), totals of 3 rows and 3 columns, are all prime.

4, 8116, 12653, 12659, 53382

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Example

a(1) = 417979 because p(417979) = 6080051 and we have 3 x 3 square with desired property:
................
..7..11..13=>31.
.17..19..23=>59.
.29..31..37=>97.
..v..v...v.
.53..61..73.

Crossrefs

Cf. A116936.

Sequence in context: A058464 A053951 A058460 * A072724 A116271 A274551

Adjacent sequences: A115047 A115048 A115049 * A115051 A115052 A115053

Keyword

nonn

Author

Zak Seidov, Feb 28 2006

Status

approved