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A271788 as a simple table

n a(n)
1 0
2 1
3 3
4 7
5 16
6 39
7 105
8 314
9 1035
10 3723
11 14494
12 60670
13 271544
14 1293147
15 6523495
16 34724247
17 194357190
18 1140402612
19 6995760364
20 44760085240
21 298054873358
22 2061644525813
23 14787185811993
24 109804829195145
25 842928183558160
26 6680572760715182
27 54595535222727960

[0,1,3,7,16,39,105,314,1035,3723,14494,60670,
 271544,1293147,6523495,34724247,194357190,
 1140402612,6995760364,44760085240,298054873358,
 2061644525813,14787185811993,109804829195145,
 842928183558160,6680572760715182,
 54595535222727960]

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Last modified April 27 08:58 EDT 2024. Contains 372017 sequences. (Running on oeis4.)