# A253824 (b-file synthesized from sequence entry)
1 540
2 2352
3 28224
4 82890
5 737856
6 1524096
7 1531152
8 3429216
9 17062920
10 22264200
11 23268600
12 49447728
13 104941200
14 162496048
15 197499456
16 267450144
17 502334784
18 619672032
19 2347826040
20 2942021520
21 4045874976
22 4302305280
23 9876226752