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Revision History for A078050 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A078050 Expansion of (1-x)/(1+x+2*x^2).
(history; published version)
#22 by Joerg Arndt at Sat Jun 05 04:39:37 EDT 2021
STATUS

reviewed

approved

#21 by Vaclav Kotesovec at Sat Jun 05 03:48:36 EDT 2021
STATUS

proposed

reviewed

#20 by Jon E. Schoenfield at Sat Jun 05 03:21:08 EDT 2021
STATUS

editing

proposed

#19 by Jon E. Schoenfield at Sat Jun 05 03:21:06 EDT 2021
COMMENTS

INVERTi transform of A005408, (2n + 1) = A078050 signed: (1, 2, 0, -4, -4, 4, 12, 4, -20, -28,...) = , ...) = left border of triangle A144106. [From _. - _Gary W. Adamson_, Sep 11 2008]

FORMULA

a(n-1) = sum(Sum_{k=1..n} (-1)^(n, (sum(-k) * Sum_{i=0..n, } binomial(k,n-i) * binomial(k+i-1,, 2*k-1))) * (-1)^(n-k)). [_). - _Vladimir Kruchinin_, Mar 11 2013]

CROSSREFS

Cf. A005408, A144106 [From _. - _Gary W. Adamson_, Sep 11 2008],

Cf. A208904.

STATUS

approved

editing

#18 by Charles R Greathouse IV at Sat Jun 13 00:50:49 EDT 2015
LINKS

<a href="/index/Rec">Index to sequencesentries withfor linear recurrences with constant coefficients</a>, signature (-1,-2).

Discussion
Sat Jun 13 00:50
OEIS Server: https://oeis.org/edit/global/2439
#17 by Charles R Greathouse IV at Sat Jun 13 00:27:45 EDT 2015
LINKS

<a href="/index/Rec">Index entries forto sequences related towith linear recurrences with constant coefficients</a>, signature (-1,-2).

Discussion
Sat Jun 13 00:27
OEIS Server: https://oeis.org/edit/global/2438
#16 by Charles R Greathouse IV at Fri Jun 12 15:25:15 EDT 2015
LINKS

<a href="/index/Rea#recLCCRec">Index entries for sequences related to linear recurrences with constant coefficients</a>, signature (-1,-2).

Discussion
Fri Jun 12 15:25
OEIS Server: https://oeis.org/edit/global/2436
#15 by Bruno Berselli at Sat Jul 13 11:39:01 EDT 2013
STATUS

proposed

approved

#14 by Ralf Stephan at Sat Jul 13 06:11:04 EDT 2013
STATUS

editing

proposed

#13 by Ralf Stephan at Sat Jul 13 06:10:55 EDT 2013
LINKS

<a href="/index/Rea#recLCC">Index entries for sequences related to linear recurrences with constant coefficients</a>, signature (-1,-2).

STATUS

approved

editing

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Last modified August 29 06:09 EDT 2024. Contains 375510 sequences. (Running on oeis4.)