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A186122 as a simple table

n a(n)
1 18
2 94
3 262
4 946
5 2978
6 10502
7 34678
8 120290
9 405274
10 1395998
11 4745006
12 16291134
13 55591062
14 190569866
15 651446994
16 2231635906
17 7634948674
18 26146587758
19 89488608966
20 306421554338
21 1048950425454
22 3591569027638
23 12295940315506

[18,94,262,946,2978,10502,34678,120290,405274,
 1395998,4745006,16291134,55591062,190569866,
 651446994,2231635906,7634948674,26146587758,
 89488608966,306421554338,1048950425454,
 3591569027638,12295940315506]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)