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A108623
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G.f. satisfies x = (A(x)-(A(x))^2)/(1-A(x)-(A(x))^2).
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2
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1, 0, -1, -1, 1, 4, 3, -8, -23, -10, 67, 153, 9, -586, -1081, 439, 5249, 7734, -7941, -47501, -53791, 105314, 430119, 343044, -1249799, -3866556, -1730017, 13996097, 34243897, 1947204, -150962373, -296101864, 121857185, 1582561870
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,6
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COMMENTS
| Row sums of inverse of Riordan array (1/(1-x-x^2), x(1-x)/(1-x-x^2)) (Cf. A053538). - Paul Barry (pbarry(AT)wit.ie), Nov 01 2006
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FORMULA
| Binomial transform of A105523. - Paul Barry (pbarry(AT)wit.ie), Nov 01 2006
G.f.: (1+x-sqrt(1-2x+5x^2))/(2x(1-x)); - Paul Barry (pbarry(AT)wit.ie), Nov 01 2006
Conjecture: n*a(n) +3*(1-n)*a(n-1) +(7*n-18)*a(n-2) +5*(3-n)*a(n-3)=0. - R. J. Mathar, Nov 15 2011
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CROSSREFS
| Cf. A039978. Except for signs, same as A108624.
Sequence in context: A198179 A137503 A108624 * A159550 A155536 A095303
Adjacent sequences: A108620 A108621 A108622 * A108624 A108625 A108626
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KEYWORD
| sign
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AUTHOR
| Christian G. Bower (bowerc(AT)usa.net), Jun 12 2005
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