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A019225 as a simple table

n a(n)
3 0
4 2
5 2
6 4
7 12
8 18
9 48
10 120
11 214
12 543
13 1243
14 2938
15 7446
16 17699
17 46859
18 117211
19 306145
20 798676
21 2064225
22 5392254
23 14067406
24 36789381
25 96591196
26 253720348
27 668506769
28 1764455947
29 4666411353
30 12367143090
31 32841591931

[0,2,2,4,12,18,48,120,214,543,1243,2938,7446,
 17699,46859,117211,306145,798676,2064225,5392254,
 14067406,36789381,96591196,253720348,668506769,
 1764455947,4666411353,12367143090,32841591931]

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Last modified December 8 22:49 EST 2021. Contains 349596 sequences. (Running on oeis4.)