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A051333 Euclid-Mullin sequence (A000945) with initial value a(1)=257 instead of a(1)=2. 0
257, 2, 5, 3, 11, 84811, 31, 7, 1560842137471, 20113, 17, 83, 47, 339491, 7814561, 109, 2897, 16103, 70921439, 199, 1381 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..21.

MATHEMATICA

a[1]=257; a[n_] := First[ Flatten[ FactorInteger[ 1+Product[ a[ j ], {j, 1, n-1} ] ] ] ]; Array[a, 10]

CROSSREFS

Cf. A000945, A000946, A005265, A005266.

Sequence in context: A180699 A195529 A004217 * A182912 A043676 A045030

Adjacent sequences:  A051330 A051331 A051332 * A051334 A051335 A051336

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu)

STATUS

approved

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Last modified May 19 20:30 EDT 2013. Contains 225436 sequences.