10 0 bell_polynomial(n,k).coefficients() raises an error ( 2016-06-21 01:58:05 +0100 )
10 0 bell_polynomial(n,k).coefficients() raises an error ( 2015-04-30 12:06:12 +0100 )
2 0 bell_polynomial(n,k).coefficients() raises an error ( 2015-04-30 07:51:50 +0100 )