# A084737 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 10
5 40
6 250
7 2560
8 32590
9 543100
10 10242790
11 233335660
12 6703028890
13 207263519020
14 7628001653830
15 311878265181040
16 13394639596851070
17 628284422185342480
18 33217442899375387210
19 1955977793053588026280