Number of labeled octopi with n nodes such that each tentacle has an odd number of nodes.
A226968
Number of labeled octopi with n nodes such that each tentacle has an odd number of nodes.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =8a(4) =30a(5) =264a(6) =1920a(7) =20880a(8) =226800a(9) =3064320a(10) =43908480a(11) =722131200a(12) =12773376000a(13) =249559833600
External references
- oeis: A226968