# A053563 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 1
5 4
6 13
7 36
8 90
9 243
10 661
11 1804
12 4914
13 13608
14 37944
15 106288
16 298755
17 843796
18 2391363
19 6797196
20 19370696
21 55345784
22 158491993
23 454803100
24 1307541690
25 3765720066
26 10862667648
27 31381059609
28 90780846494
29 262951527460