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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A055452 T(n,n-2), array T as in A055450. 2
1, 3, 5, 19, 75, 305, 1270, 5390, 23236, 101480, 448085, 1997115, 8973255, 40602093, 184853055, 846206025, 3892585325, 17984308775, 83417287855, 388297304825, 1813341109825, 8493372326675, 39889629750600 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..24.

FORMULA

a(n) = 5*hypergeometric([4-n,7/2],[5],-4), for n>3. - Peter Luschny, Aug 15 2012

CROSSREFS

Sequence in context: A265778 A257866 A251617 * A184254 A077458 A294382

Adjacent sequences:  A055449 A055450 A055451 * A055453 A055454 A055455

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 18 2000

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 November 23 17:30 EST 2020. Contains 338595 sequences. (Running on oeis4.)