def pbdv_seq(v,x):
if not (isscalar(v) and isscalar(x)):<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>n = int(v)<EOL>v0 = v-n<EOL>if (n < <NUM_LIT:1>):<EOL><INDENT>n1 = <NUM_LIT:1><EOL><DEDENT>else:<EOL><INDENT>n1 = n<EOL><DEDENT>v1 = n1 + v0<EOL>dv,dp,pdf,pdd = specfun.pbdv(v1,x)<EOL>return dv[:n1+<NUM_LIT:1>],dp[:n1+<NUM_LIT:1>]<EOL>
Compute sequence of parabolic cylinder functions Dv(x) and
    their derivatives for Dv0(x)..Dv(x) with v0=v-int(v).