# A098307 (b-file synthesized from sequence entry)
0 0
1 1
2 7
3 64
4 567
5 5041
6 44800
7 398161
8 3538647
9 31449664
10 279508327
11 2484125281
12 22077619200
13 196214447521
14 1743852408487
15 15498457228864
16 137742262651287
17 1224181906632721
18 10879894897043200
19 96694872166756081