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A151419 as a simple table

n a(n)
0 1
1 0
2 3
3 4
4 20
5 60
6 227
7 808
8 3146
9 11798
10 46638
11 182794
12 729704
13 2930082
14 11866477
15 48312364
16 198017220
17 815038874
18 3370875226
19 13995160516
20 58314718458
21 243770271046
22 1022058534364
23 4296650572370
24 18107826477884
25 76487043063264
26 323759955579550
27 1373105848933180
28 5834053915245474

[1,0,3,4,20,60,227,808,3146,11798,46638,182794,
 729704,2930082,11866477,48312364,198017220,
 815038874,3370875226,13995160516,58314718458,
 243770271046,1022058534364,4296650572370,
 18107826477884,76487043063264,323759955579550,
 1373105848933180,5834053915245474]

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Last modified June 12 23:56 EDT 2024. Contains 373362 sequences. (Running on oeis4.)