login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A129397 Row sums of A129396. 1
1, 9, -29, 61, -17, -263, 1019, -2027, 1639, 4625, -22989, 52717, -62369, -43863, 426475, -1159355, 1757143, -366911, -6668509, 22627357, -41707313, 31494233, 83699163, -398658443, 880521031, -1018619535, -628523501, 6333704269, -16958792897, 25462262281, -6426619957, -88626976859 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..31.

FORMULA

Empirical g.f.: (x+1)*(8*x^4-6*x^3+x^2+12*x+1) / ((x-1)^2*(4*x^2+3*x+1)^2). - Colin Barker, Oct 07 2015

CROSSREFS

Cf. A129396.

Sequence in context: A098949 A031296 A146869 * A136392 A272732 A272740

Adjacent sequences:  A129394 A129395 A129396 * A129398 A129399 A129400

KEYWORD

sign

AUTHOR

Jonas Wallgren, Apr 13 2007

EXTENSIONS

Corrected and extended by R. J. Mathar, Apr 30 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 4 05:34 EDT 2020. Contains 333212 sequences. (Running on oeis4.)