# A005741 (b-file synthesized from sequence entry)
1 4
2 16
3 160
4 3112
5 89488
6 3358600
7 154925968
8 8469271816
9 535078978000
10 38352590740744
11 3074533743260944
12 272548937753080072
13 26471366143068858448
14 2795374966070961592072
15 318874907420330435803024