# A152853 (b-file synthesized from sequence entry)
1 337
2 737
3 7373
4 73333
5 73733
6 333377
7 333733
8 737333
9 737773
10 777337
11 777737
12 3333373
13 3333773
14 3373337
15 3373777
16 3777377
17 3777733
18 7337737
19 7373333
20 7373773
21 7733377
22 7733777
23 7777373
24 33337333
25 33337733
26 33377737
27 33733373