# A124023 (b-file synthesized from sequence entry)
0 1
1 2
2 10
3 28
4 108
5 344
6 1224
7 4080
8 14128
9 47840
10 164128
11 558784
12 1910976
13 6518144
14 22267008
15 75998976
16 259527424
17 885980672
18 3025129984
19 10328034304
20 35262925824
21 120393537536
22 411052492800
23 1403414507520
24 4791569821696
25 16359416717312
26 55854594334720