# A102227 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 -5
4 -20
5 -51
6 -289
7 -1426
8 -22622
9 -259734
10 -15968025
11 -405699154
12 -110016092396
13 -6660687936224
14 -7918107904514781
15 -1332064204800175993
16 -6282110941080800842150
17 -3412055538464918268114551
18 -57520868453379641772222723912