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A074087 as a simple table

n a(n)
0 0
1 0
2 0
3 6
4 33
5 144
6 570
7 2118
8 7587
9 26448
10 90420
11 304470
12 1013061
13 3338112
14 10911150
15 35423862
16 114342855
17 367242336
18 1174368360
19 3741029094
20 11876859369
21 37591894320
22 118659631650
23 373630740966
24 1173847761003

[0,0,0,6,33,144,570,2118,7587,26448,90420,304470,
 1013061,3338112,10911150,35423862,114342855,
 367242336,1174368360,3741029094,11876859369,
 37591894320,118659631650,373630740966,
 1173847761003]

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Last modified April 25 12:53 EDT 2024. Contains 371969 sequences. (Running on oeis4.)