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A121327 as a simple table

n a(n)
4 0
5 1
6 4
7 17
8 56
9 187
10 586
11 1827
12 5562
13 16811
14 50225
15 149135
16 439818
17 1290975
18 3772259
19 10983684
20 31878940
21 92278466
22 266481212
23 767972142
24 2209210615
25 6345086203

[0,1,4,17,56,187,586,1827,5562,16811,50225,149135,
 439818,1290975,3772259,10983684,31878940,92278466,
 266481212,767972142,2209210615,6345086203]

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Last modified July 21 08:35 EDT 2024. Contains 374463 sequences. (Running on oeis4.)