login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027143 a(n) = Sum_{k=0..2n-3} T(n,k) * T(n,k+3), with T given by A027113. 0
57, 486, 4117, 34760, 293086, 2471917, 20870169, 176467252, 1494672812, 12682766442, 107814252502, 918166760699, 7832993240285, 66936986352534, 572934789920969, 4911478255448828, 42165255645650628, 362494201554529232, 3120475613849051712, 26895832224848130557 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..22.

CROSSREFS

Sequence in context: A337629 A218812 A290779 * A164786 A240416 A264240

Adjacent sequences:  A027140 A027141 A027142 * A027144 A027145 A027146

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 23 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 3 06:54 EDT 2022. Contains 355031 sequences. (Running on oeis4.)