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0, 0, 128, 3072, 49152, 655360, 7864320, 88080384, 939524096, 9663676416, 96636764160, 944892805120, 9070970929152, 85761906966528, 800444465020928, 7388718138654720, 67553994410557440, 612489549322387456
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..1000
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FORMULA
| a(0)=0, a(1)=0, a(2)=128, a(n)=24*a(n-1)-192*a(n-2)+512*a(n-3) [From Harvey P. Dale, Nov 05 2011]
G.f.: -((128*x^2)/(8*x-1)^3) [From Harvey P. Dale, Nov 05 2011]
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MATHEMATICA
| Table[(n^2-n)8^n, {n, 0, 20}] (* or *) LinearRecurrence[{24, -192, 512}, {0, 0, 128}, 20] (* From Harvey P. Dale, Nov 05 2011 *)
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PROG
| (MAGMA) [(n^2-n)*8^n: n in [0..20]]; // Vincenzo Librandi, Nov 16 2011
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CROSSREFS
| Cf. A036289; A007758.
Sequence in context: A056574 A096961 A019564 * A022150 A191899 A191495
Adjacent sequences: A128799 A128800 A128801 * A128803 A128804 A128805
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KEYWORD
| nonn
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AUTHOR
| Mohammad K. Azarian (azarian(AT)evansville.edu), Apr 07 2007
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