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1, 63, 305, 847, 1809, 3311, 5473, 8415, 12257, 17119, 23121, 30383, 39025, 49167, 60929, 74431, 89793, 107135, 126577, 148239, 172241, 198703, 227745, 259487, 294049, 331551, 372113, 415855, 462897, 513359, 567361, 625023, 686465, 751807, 821169, 894671
(list;
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refs;
listen;
history;
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..35.
Index entries for linear recurrences with constant coefficients, signature (4, -6, 4, -1).
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MATHEMATICA
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Table[LegendreP[3, 2n+1], {n, 0, 50}]
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PROG
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(PARI) a(n)=pollegendre(3, 2*n+1) \\ Charles R Greathouse IV, Mar 19 2017
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CROSSREFS
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Sequence in context: A359564 A138833 A204736 * A034817 A160895 A203556
Adjacent sequences: A160671 A160672 A160673 * A160675 A160676 A160677
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane, Nov 17 2009
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STATUS
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approved
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