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A128958 Numbers n such that n^2+(n+1)^3 is prime. +0
1
2, 3, 5, 6, 12, 14, 17, 20, 26, 35, 36, 38, 39, 48, 50, 65, 66, 71, 72, 74, 80, 87, 89, 90, 96, 105, 107, 108, 113, 114, 119, 120, 122, 132, 134, 135, 137, 144, 146, 152, 155, 156, 158, 162, 167, 168, 185, 186, 200, 201, 207, 213, 221, 225, 230, 231, 236, 237, 248 (list; graph; listen)
OFFSET

1,1

EXAMPLE

2^2+3^3=31, 3^2+4^3=73, 5^2+6^3=241, 6^2+7^3=379, 12^2+13^3=2341 all primes.

MATHEMATICA

Select[Range[0, 300], PrimeQ[ #^2+(#+1)^3]&]

CROSSREFS

Adjacent sequences: A128955 A128956 A128957 this_sequence A128959 A128960 A128961

Sequence in context: A078913 A114339 A127525 this_sequence A007435 A125877 A118787

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Apr 28 2007

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Last modified October 6 12:54 EDT 2008. Contains 144667 sequences.


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