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A028228
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Expansion of 1/((1-7x)(1-10x)(1-11x)(1-12x)).
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0
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1, 40, 1007, 20414, 364329, 5979036, 92485219, 1369339018, 19606630637, 273438929192, 3733694351751, 50109751007862, 662977655746225, 8667106208101108, 112162143040653803, 1438993526155501346
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n) = 40*a(n-1) -593*a(n-2) +3854*a(n-3) -9240*a(n-4), n>=4. - Vincenzo Librandi, Mar 18 2011
a(n) = 23*a(n-1) -132*a(n-2) +(10^(n+1) -7^(n+1))/3, n>=2. - Vincenzo Librandi, Mar 18 2011
a(n) = 6*12^(n+2)/5 -11^(n+3)/4 +5*10^(n+2)/3-7^(n+3)/60 . - R. J. Mathar, Mar 20 2011
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CROSSREFS
| Sequence in context: A172510 A004349 A016092 * A165380 A075907 A062143
Adjacent sequences: A028225 A028226 A028227 * A028229 A028230 A028231
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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