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2, 2, 6, 14, 38, 112, 276, 814, 1998, 5702, 14226, 39404, 99908, 270922, 695106, 1859134, 4807518, 12748472, 33128916, 87394454, 227792678, 599050102, 1564242906, 4106054164, 10733283588, 28143585362, 73614464826, 192899714414, 504751433798, 1322156172352
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Sum of the binomial and inverse binomial transforms of A014217.
Starting at a(1), the last digits form a period-4 sequence 2, 6, 4, 8.
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (2,7,-12,-11,16,-4).
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FORMULA
| a(n) = +2*a(n-1) +7*a(n-2) -12*a(n-3) -11*a(n-4) +16*a(n-5) -4*a(n-6), n>6. [R. J. Mathar, Jun 14 2010]
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CROSSREFS
| Sequence in context: A005310 A002203 A097341 * A014431 A201687 A142471
Adjacent sequences: A142707 A142708 A142709 * A142711 A142712 A142713
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KEYWORD
| nonn
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Sep 25 2008
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EXTENSIONS
| Offset set to zero and extended - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 14 2010
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