# A042323 (b-file synthesized from sequence entry)
0 1
1 4
2 9
3 13
4 74
5 531
6 1667
7 12200
8 62667
9 74867
10 212401
11 924471
12 48284893
13 194064043
14 436412979
15 630477022
16 3588798089
17 25752063645
18 80844989024
19 591666986813
20 3039179923089
21 3630846909902
22 10300873742893