# A218671 (b-file synthesized from sequence entry)
0 1
1 1
2 8
3 120
4 2635
5 76503
6 2764957
7 119634152
8 6030195490
9 347037131298
10 22453144758980
11 1613322276606404
12 127466755375275614
13 10983423290600347408
14 1025046637630590359928
15 103004615955568528609200
16 11088429267977228122393005
17 1273093489376335864500416685