# A144283 (b-file synthesized from sequence entry)
0 1
1 3
2 30
3 321
4 4788
5 84483
6 1892835
7 48681864
8 1471877946
9 50200415496
10 1925842959810
11 81617639962320
12 3796524406060155
13 191934556035324795
14 10484757631267725960
15 615052198937234606625
16 38564916668583937458750
17 2573353724722205851069875