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A054339
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9-fold convolution of A000302 (powers of 4).
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3
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1, 36, 720, 10560, 126720, 1317888, 12300288, 105431040, 843448320, 6372720640, 45883588608, 317013884928, 2113425899520, 13655982735360, 85837605765120, 526470648692736, 3158823892156416, 18581317012684800, 107358720517734400
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..100
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FORMULA
| a(n) = binomial(n+8, 8)*4^n.
G.f. 1/(1-4*x)^9.
a(n)= A054335(n+17, 17).
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MAPLE
| seq(binomial(n+8, 8)*4^n, n=0..18); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 23 2008
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PROG
| (MAGMA) [Binomial(n+8, 8)*4^n: n in [0..30]]; // Vincenzo Librandi, May 31 2011
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CROSSREFS
| Cf. A000302, A054335.
Cf. A038231.
Sequence in context: A157092 A004419 A185491 * A138832 A109405 A064541
Adjacent sequences: A054336 A054337 A054338 * A054340 A054341 A054342
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KEYWORD
| easy,nonn
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AUTHOR
| Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Mar 13 2000
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