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A219526 Number of 3 x 3 squares filled by 9 consecutive primes prime(n) to prime(n+8) such that sums along rows, columns and diagonals are primes. 1
928, 4360, 3648, 2816, 2208, 2120, 1520, 0, 688, 768, 936, 560, 1112, 544, 80, 384, 624, 320, 1568, 120, 32, 0, 168, 56, 272, 160, 24, 168, 32, 72, 776, 440, 24, 208, 32, 0, 24, 224, 648, 680, 0, 152, 56, 24, 16, 0, 0, 0, 0, 0, 0, 24, 0, 184, 160, 16, 32, 40 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
COMMENTS
All terms are multiples of 8.
LINKS
EXAMPLE
.3...5..11
17...7..13
23..29..19
sums along rows: 3+5+11 = 19, 17+7+13 = 37, 23+29+19 = 71,
sums along columns: 3+17+23 = 42, 5+7+29 = 41, 11+13+19 = 43,
sums along diagonals: 3+7+19 = 29, 11+7+23 = 41.
CROSSREFS
Sequence in context: A255106 A253039 A237229 * A249535 A350702 A340957
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 21 2012
STATUS
approved

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Last modified June 18 01:52 EDT 2024. Contains 373468 sequences. (Running on oeis4.)