# A019520 (b-file synthesized from sequence entry)
1 2
2 24
3 246
4 2468
5 246810
6 24681012
7 2468101214
8 246810121416
9 24681012141618
10 2468101214161820
11 246810121416182022
12 24681012141618202224
13 2468101214161820222426
14 246810121416182022242628
15 24681012141618202224262830
16 2468101214161820222426283032