# A263843 (b-file synthesized from sequence entry)
0 0
1 1
2 4
3 23
4 156
5 1162
6 9192
7 75819
8 644908
9 5616182
10 49826712
11 448771622
12 4092553752
13 37714212564
14 350658882768
15 3285490743987
16 30989950019532
17 294031964658430
18 2804331954047160
19 26870823304476690
20 258548658860327880
21 2497104592420003980
22 24199830095943069360
23 235254163727798051070