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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A047091 T(n,n), array T as in A047089. 0
1, 1, 4, 11, 41, 139, 515, 1871, 7004, 26191, 99137, 376300, 1437105, 5505203, 21167781, 81602665, 315395985, 1221558683, 4740410605, 18426590090, 71736136773, 279654633032, 1091552835344, 4265355947434, 16684466516559 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..24.

CROSSREFS

Sequence in context: A289283 A152532 A121096 * A121092 A281346 A030981

Adjacent sequences:  A047088 A047089 A047090 * A047092 A047093 A047094

KEYWORD

nonn

AUTHOR

Clark Kimberling

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 January 19 15:37 EST 2020. Contains 331049 sequences. (Running on oeis4.)