The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A369930 Number of achiral noncrossing partitions composed of n blocks of size 4. 2
1, 1, 1, 3, 5, 16, 31, 102, 213, 712, 1556, 5255, 11843, 40288, 92842, 317548, 744277, 2556376, 6072124, 20926236, 50244660, 173634752, 420634039, 1456967358, 3556069395, 12341344216, 30314970076, 105384541314, 260295610706, 906188676224, 2249045501636 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
CROSSREFS
Column 4 of A369929.
Sequence in context: A019096 A370604 A295358 * A077551 A106588 A123785
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Feb 08 2024
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 June 6 18:47 EDT 2024. Contains 373134 sequences. (Running on oeis4.)