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A264471 as a simple table

n a(n)
1 0
2 4
3 6
4 16
5 49
6 124
7 384
8 1041
9 2868
10 8189
11 22760
12 63910
13 179095
14 500979
15 1405340
16 3935526
17 11024880
18 30892270
19 86537090
20 242454683
21 679254490
22 1902958308
23 5331384633
24 14936238820
25 41845207329
26 117233159460
27 328438385380

[0,4,6,16,49,124,384,1041,2868,8189,22760,63910,
 179095,500979,1405340,3935526,11024880,30892270,
 86537090,242454683,679254490,1902958308,
 5331384633,14936238820,41845207329,117233159460,
 328438385380]

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Last modified February 27 19:09 EST 2024. Contains 370378 sequences. (Running on oeis4.)