(Translated by https://www.hiragana.jp/)
# A019137 (b-file synthesized from sequence entry)
3 0
4 2
5 3
6 4
7 14
8 22
9 27
10 111
11 203
12 459
13 1247
14 2908
15 7150
16 18683
17 45204
18 115959
19 294132
20 747914
21 1921874
22 4963203
23 12803348
24 33373848
25 86878679
26 227387373
27 596390318
28 1568366108
29 4131699364
30 10914084820
31 28862535866