# A212381 (b-file synthesized from sequence entry)
2 1
3 2
4 10
5 78
6 728
7 7848
8 94374
9 1242910
10 17696008
11 269931648
12 4382342380
13 75347334440
14 1366637858280
15 26068366769840
16 521600687481182
17 10924123724430678
18 239025078013012744
19 5454868593441272080
20 129644175575638999380
21 3204394919259792492432