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Search: id:A126245
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| A126245 |
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(p+2)! if p prime and p+2 prime. |
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+0
1
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| 120, 5040, 6227020800, 121645100408832000, 8222838654177922817725562880000000, 60415263063373835637355132068513997507264512000000000
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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3 and 5...........5!=120
5 and 7...........7!=5040
17 and 19........19!=121645100408832000
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MAPLE
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ZL:=[]:for p from 1 to 53 do if (isprime(p) and isprime(p+2)) then ZL:=[op(ZL), ((p+2)!)]; fi; od; print(ZL);
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CROSSREFS
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Sequence in context: A140907 A072419 A031145 this_sequence A008661 A061541 A003438
Adjacent sequences: A126242 A126243 A126244 this_sequence A126246 A126247 A126248
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KEYWORD
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easy,nonn
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AUTHOR
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Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 08 2007
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