login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061169 Third column of Lucas bisection triangle (even part). 1
1, 39, 315, 1687, 7470, 29634, 109421, 384105, 1298613, 4264835, 13686456, 43102644, 133636825, 408900987, 1237114335, 3706490479, 11010661266, 32463981270, 95081107013, 276820695645, 801633669561 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Numerator of g.f. is row polynomial sum(A061186(3,m)*x^m,m=0..4).

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(n)= A060923(n+2, 2).

G.f.: (1+x)*(1+29*x-35*x^2+12*x^3)/(1-3*x+x^2)^3.

CROSSREFS

A002878(n)=A060923(n, 0), A060934.

Sequence in context: A190537 A187095 A232874 * A233369 A238102 A266172

Adjacent sequences:  A061166 A061167 A061168 * A061170 A061171 A061172

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Apr 20 2001

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 December 5 20:40 EST 2019. Contains 329777 sequences. (Running on oeis4.)