The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A137234 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A137234

Expansion of g.f. 1/((1-x)^2*(1 - 3*x + 2*x^2 - x^3)).
(history; published version)

#26 by Harvey P. Dale at Mon Jun 07 15:15:59 EDT 2021

STATUS

editing

approved

#25 by Harvey P. Dale at Mon Jun 07 15:15:56 EDT 2021

MATHEMATICA

CoefficientList[Series[1/((1-x)^2(1-3x+2x^2-x^3)), {x, 0, 30}], x] (* Harvey P. Dale, Jun 07 2021 *)

STATUS

approved

editing

#24 by N. J. A. Sloane at Tue Apr 20 10:28:24 EDT 2021

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reviewed

approved

#23 by Joerg Arndt at Tue Apr 20 08:53:09 EDT 2021

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proposed

reviewed

#22 by Jon E. Schoenfield at Tue Apr 20 07:47:58 EDT 2021

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editing

proposed

#21 by Jon E. Schoenfield at Tue Apr 20 07:47:56 EDT 2021

NAME

Expansion of g.f. 1/((1-x)^2*(1 - 3*x + 2*x^2 - x^3)).

FORMULA

O.g.f: 1/((1-z)^2*(1 - 3*z + 2*z^2 - z^3)).

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reviewed

editing

#20 by Joerg Arndt at Tue Apr 20 01:07:48 EDT 2021

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proposed

reviewed

#19 by Michel Marcus at Tue Apr 20 00:35:00 EDT 2021

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editing

proposed

#18 by Michel Marcus at Tue Apr 20 00:34:57 EDT 2021

FORMULA

The oO.g.f is the function f given by f(z) = a(0)+a(1)*z+... = : 1/((1-z)^2*(1-3*z+2*z^2-z^3)).

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proposed

editing

#17 by G. C. Greubel at Mon Apr 19 16:19:48 EDT 2021

STATUS

editing

proposed