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A230137 as a simple table

n a(n)
0 0
1 2
2 6
3 18
4 44
5 110
6 252
7 588
8 1304
9 2934
10 6380
11 14036
12 30120
13 65260
14 138712
15 297240
16 627248
17 1332902
18 2796876
19 5904516
20 12333320
21 25899972
22 53897096
23 112693928
24 233776464
25 487034300
26 1007623032
27 2092755528
28 4319728784
29 8948009624
30 18432890160
31 38094639664

[0,2,6,18,44,110,252,588,1304,2934,6380,14036,
 30120,65260,138712,297240,627248,1332902,2796876,
 5904516,12333320,25899972,53897096,112693928,
 233776464,487034300,1007623032,2092755528,
 4319728784,8948009624,18432890160,38094639664]

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Last modified April 18 04:31 EDT 2024. Contains 371767 sequences. (Running on oeis4.)