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A prime-based vector recursion: a(n)={Prime[n],Prime[n-1],-Prime[n-2],...,-1,-1}.
#4 by Russ Cox at Fri Mar 30 17:34:28 EDT 2012
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Fri Mar 30
17:34
OEIS Server: https://oeis.org/edit/global/158
#3 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010
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#2 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009
MATHEMATICA
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#1 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009
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