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A118660
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Numbers n such that 4*n^4 + 3 is prime.
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2
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0, 1, 2, 5, 11, 16, 47, 49, 52, 53, 68, 73, 77, 86, 91, 115, 128, 140, 143, 166, 170, 182, 206, 220, 224, 229, 263, 271, 278, 284, 287, 340, 341, 353, 359, 362, 380, 382, 388, 395, 401, 403, 413, 415, 427, 437, 476, 497, 506, 515, 523, 598, 611, 619, 625, 647
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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FORMULA
| A000040(k)=4*n^4+3 - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 30 2006
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EXAMPLE
| If n=91 then 4*n^4 + 3 = 274299847 (prime).
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PROG
| (PARI) isA118660(n)= { if(isprime(4*n^4+3), return(1), return(0) ); } { for(n=0, 6000, if(isA118660(n)==1, print1(n, ", ") ); ); } - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 30 2006
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CROSSREFS
| Sequence in context: A082083 A024917 A081402 * A009770 A132121 A070957
Adjacent sequences: A118657 A118658 A118659 * A118661 A118662 A118663
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KEYWORD
| nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), May 24 2006
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 30 2006
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