# A150244 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 22
4 84
5 334
6 1374
7 5778
8 24688
9 106577
10 465490
11 2050238
12 9083750
13 40512563
14 181633610
15 817664224
16 3696090185
17 16767288215
18 76293756214
19 348129688283
20 1592645474737
21 7302821254661
22 33555980562246
23 154490994132251
24 712544695144962
25 3291770609667446
26 15230615144016301
27 70570905651026824