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A016201
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Expansion of 1/((1-x)(1-2x)(1-7x)).
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0
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1, 10, 77, 554, 3909, 27426, 192109, 1345018, 9415637, 65910482, 461375421, 3229632042, 22607432485, 158252043778, 1107764339213, 7754350440026, 54280453211253, 379963172740914, 2659742209710685
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (10,-23,14).
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FORMULA
| a(n) = (49*7^n-24*2^n+5)/30. - Bruno Berselli, Feb 09 2011
a(0)=1, a(n)=7*a(n-1)+2^(n+1)-1. - Vincenzo Librandi, Feb 09 2011
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MAPLE
| a:=n->sum((7^(n-j)-2^(n-j))/5, j=0..n): seq(a(n), n=1..19); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 15 2007
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CROSSREFS
| Sequence in context: A081678 A081182 A127536 * A080618 A082136 A153596
Adjacent sequences: A016198 A016199 A016200 * A016202 A016203 A016204
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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