# A004344 (b-file synthesized from sequence entry)
0 1
1 15
2 190
3 2300
4 27405
5 324632
6 3838380
7 45379620
8 536878650
9 6358402050
10 75394027566
11 895068996640
12 10638894058520
13 126600387152400
14 1508152231077400
15 17984495151670680
16 214667221708410075
17 2564603660132096265
18 30664510802988208300
19 366934961273420740200