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A198520 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 4
5 9
6 22
7 55
8 141
9 370
10 986
11 2662
12 7264
13 20006
14 55534
15 155219
16 436456
17 1233822
18 3504482
19 9996417
20 28624038
21 82248498
22 237082689
23 685375920
24 1986604360
25 5772399530
26 16810591254
27 49059068617
28 143450142998
29 420213814655
30 1233034693847
31 3623838769503

[1,1,1,2,4,9,22,55,141,370,986,2662,7264,20006,
 55534,155219,436456,1233822,3504482,9996417,
 28624038,82248498,237082689,685375920,1986604360,
 5772399530,16810591254,49059068617,143450142998,
 420213814655,1233034693847,3623838769503]

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Last modified November 11 15:46 EST 2019. Contains 329018 sequences. (Running on oeis4.)