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A136520 as a simple table

n a(n)
1 1
2 1
3 3
4 13
5 44
6 146
7 530
8 1975
9 7314
10 27262
11 102802
12 390138
13 1486064
14 5682756
15 21812436
16 83976075
17 324115550
18 1253795510
19 4859960402
20 18871869302
21 73398851448
22 285882923196
23 1114943553308
24 4353426835238
25 17016813133124
26 66581653586476
27 260750813149140
28 1022023318047220

[1,1,3,13,44,146,530,1975,7314,27262,102802,
 390138,1486064,5682756,21812436,83976075,
 324115550,1253795510,4859960402,18871869302,
 73398851448,285882923196,1114943553308,
 4353426835238,17016813133124,66581653586476,
 260750813149140,1022023318047220]

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Last modified April 19 16:52 EDT 2024. Contains 371794 sequences. (Running on oeis4.)