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A027911 as a simple table

n a(n)
0 1
1 3
2 15
3 77
4 414
5 2277
6 12727
7 71955
8 410346
9 2355962
10 13599915
11 78855339
12 458917850
13 2679183405
14 15683407785
15 92022516525
16 541050073146
17 3186886397310
18 18801598011274
19 111083331666918
20 657153430251396
21 3892199032434105
22 23077435617920925
23 136963282273730613
24 813597690808666386

[1,3,15,77,414,2277,12727,71955,410346,2355962,
 13599915,78855339,458917850,2679183405,
 15683407785,92022516525,541050073146,
 3186886397310,18801598011274,111083331666918,
 657153430251396,3892199032434105,
 23077435617920925,136963282273730613,
 813597690808666386]

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Last modified May 4 10:30 EDT 2024. Contains 372240 sequences. (Running on oeis4.)