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Search: id:A069294
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| A069294 |
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Number of n X 3 binary arrays with a path of adjacent 1's from upper left corner to anywhere in right hand column. |
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+0
27
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| 12, 110, 926, 7556, 60920, 488860, 3915640, 31340216, 250769592, 2006308480, 16050948896, 128409116176, 1027277763840, 8218237436320, 65745948074080, 525967738606656, 4207742397091072, 33661940724484800, 269295530702399616
(list; graph; listen)
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OFFSET
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2,1
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FORMULA
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G.f.: 2*x^2*(6-17*x+7*x^2+8*x^3)/(1-8*x)/(2*x^3+2*x^2-4*x+1). - Vladeta Jovovic (vladeta(AT)Eunet.yu), Jul 02 2003
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CROSSREFS
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Cf. n X 2 A002450, n X 4 A069295, n X 5 A069296, n X 6 A069297, n X 7 A069298, n X 8 A069299, n X 9 A069300, n X 10 A069301, n X 11 A069302, n X 12 A069303, n X 13 A069304, n X 14 A069305, read by rows A069306-A069320.
Adjacent sequences: A069291 A069292 A069293 this_sequence A069295 A069296 A069297
Sequence in context: A016214 A037581 A081183 this_sequence A000559 A037714 A037616
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhh(AT)cadence.com), Mar 14 2002
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