A369930 Number of achiral noncrossing partitions composed of n blocks of size 4.
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
Offset: 0
Keywords
Links
- Andrew Howroyd, Table of n, a(n) for n = 0..1000
Crossrefs
Column 4 of A369929.