# A090728 (b-file synthesized from sequence entry)
0 2
1 20
2 398
3 7940
4 158402
5 3160100
6 63043598
7 1257711860
8 25091193602
9 500566160180
10 9986232009998
11 199224074039780
12 3974495248785602
13 79290680901672260
14 1581839122784659598
15 31557491774791519700
16 629567996373045734402
17 12559802435686123168340