a(n) is the number of distinct combinations that can be created by painting the sections on a shape with n divisions that rotates around its center and consists of 4 identical arms at 90-degree intervals.
A367636
a(n) is the number of distinct combinations that can be created by painting the sections on a shape with n divisions that rotates around its center and consists of 4 identical arms at 90-degree intervals.
Terms
- a(0) =2a(1) =12a(2) =140a(3) =2088a(4) =32912a(5) =524832a(6) =8390720a(7) =134226048a(8) =2147516672a(9) =34359869952a(10) =549756339200
External references
- oeis: A367636