login
A214821
Number of genus 0 unsensed hypermaps with n darts.
5
1, 3, 6, 20, 57, 240, 954, 4566, 22641, 121823, 683307, 4004055
OFFSET
1,2
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 01 2012
STATUS
approved