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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A026636 Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026626. 1
1, 1, 2, 4, 6, 11, 17, 30, 47, 78, 125, 205, 330, 536, 866, 1404, 2270, 3675, 5945, 9622, 15567, 25190, 40757, 65949, 106706, 172656, 279362, 452020, 731382, 1183403, 1914785, 3098190, 5012975, 8111166, 13124141, 21235309 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

G.f.: (x^7+x^5-x^4+x^3+1)/[(1-x^4)(1-x-x^2)].

CROSSREFS

Sequence in context: A004698 A014217 A034297 * A026658 A138688 A131298

Adjacent sequences:  A026633 A026634 A026635 * A026637 A026638 A026639

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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 14 17:43 EST 2012. Contains 205651 sequences.