verification

[Vladeta Jovovic]

Dear Sequence Fans,

Can someone check up the fourth term in sequence:

ID Number: A003088 (Formerly M2011)
Sequence:  1,2,11,172,8603,1478644
Name:      Unilateral digraphs with n unlabeled nodes.
References F. Harary and E. M. Palmer, Graphical Enumeration, Academic
Press, NY,
              1973, p. 218.
           R. C. Read and R. J. Wilson, An Atlas of Graphs, Oxford, 1998.
Keywords:  nonn,nice,more
Offset:    1
Author(s): njas
Extension: More terms from R. C. Read (rcread at sympatico.ca).

My (computer generative) calculation gives a(4)=171, or by number of arcs
x^3+10*x^4+30*x^5+45*x^6+38*x^7+27*x^8+13*x^9+5*x^10+x^11+x^12.

Also there is sequence:

ID Number: A039747
Sequence:  1,1,2,11,171
Name:      Erroneous version of A003088.
Keywords:  dead
Offset:    0

What is correct value?

All the best,

Vladeta Jovovic,
Belgrade