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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061171 One half of second column of Lucas bisection triangle (odd part). 5
3, 19, 79, 283, 940, 2982, 9171, 27581, 81557, 237995, 687158, 1966764, 5588259, 15780103, 44323195, 123920827, 345062176, 957403026, 2647935987, 7302634865, 20087869313, 55128445259, 150971982314 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Numerator of g.f. is on half of row polynomial sum(A061187(1,m)*x^m,m=0..2).

FORMULA

2*a(n)=A060924(n+1, 1).

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

CROSSREFS

Cf. A005248.

Sequence in context: A027175 A093734 A099421 * A163431 A167242 A089621

Adjacent sequences:  A061168 A061169 A061170 * A061172 A061173 A061174

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Apr 20 2001

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 11:42 EST 2012. Contains 206011 sequences.