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A081505 Primes of form 4^n+3^n. 0
2, 7, 337, 4338014017 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

m=4: 4^4+3^4=256+81=337 prime.

Exponents for first 4 terms are {0,1,4,16}.

MATHEMATICA

Do[s=3^w+4^w; If[IntegerQ[w/100], Print[{w}]]; If[PrimeQ[s], Print[{w, s}]], {w, 0, 3400}]

Do[ If[ PrimeQ[3^n+4^n], Print[3^n+4^n]], {n, 0, 10000}]

CROSSREFS

Sequence in context: A048122 A144787 A118910 * A176748 A110386 A027732

Adjacent sequences:  A081502 A081503 A081504 * A081506 A081507 A081508

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Apr 15 2003

EXTENSIONS

a(5)>10^10000, so the next term (if it exists) is too large to include.

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.