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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.
0
4, 8116, 12653, 12659, 53382
OFFSET
1,1
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
KEYWORD
nonn
AUTHOR
Zak Seidov, Feb 28 2006
STATUS
approved