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A077876
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Expansion of (1-x)^(-1)/(1-x+2*x^2).
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0
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1, 2, 1, -2, -3, 2, 9, 6, -11, -22, 1, 46, 45, -46, -135, -42, 229, 314, -143, -770, -483, 1058, 2025, -90, -4139, -3958, 4321, 12238, 3597, -20878, -28071, 13686, 69829, 42458, -97199, -182114, 12285, 376514, 351945, -401082, -1104971, -302806, 1907137, 2512750, -1301523, -6327022
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums of Riordan array (1/(1-x),x(1-2x)). - Paul Barry (pbarry(AT)wit.ie), Jul 18 2005
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LINKS
| Index entries for sequences related to Chebyshev polynomials.
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FORMULA
| a(n)=sum{k=0..n, U(k, 1/(2sqrt(2))(2sqrt(2))^k } - Paul Barry (pbarry(AT)wit.ie), Nov 20 2003
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MATHEMATICA
| Join[{a=1, b=2}, Table[c=b-2*a+1; a=b; b=c, {n, 100}]] (*From Vladimir Joseph Stephan Orlovsky, Jan 21 2011*)
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CROSSREFS
| Cf. A001045, A107920.
Sequence in context: A035368 A107853 A054758 * A095056 A140575 A186333
Adjacent sequences: A077873 A077874 A077875 * A077877 A077878 A077879
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KEYWORD
| sign
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002
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