# A221094 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 21
4 263
5 5165
6 146335
7 5649397
8 285069735
9 18214525629
10 1437313035887
11 137272113393413
12 15605422414146487
13 2082375903282194893
14 322303158660868063359
15 57271523430269553109269
16 11579903781095519639058119
17 2643368434346324374530280157
18 676521525314300179793917303951