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A316178 as a simple table

n a(n)
1 4
2 30
3 134
4 601
5 2665
6 11915
7 53134
8 237241
9 1058821
10 4726432
11 21096932
12 94170565
13 420346821
14 1876297370
15 8375198688
16 37384256688
17 166871556228
18 744862153097
19 3324830353450
20 14840996988230
21 66245542638609
22 295699266565050

[4,30,134,601,2665,11915,53134,237241,1058821,
 4726432,21096932,94170565,420346821,1876297370,
 8375198688,37384256688,166871556228,744862153097,
 3324830353450,14840996988230,66245542638609,
 295699266565050]

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Last modified October 28 13:26 EDT 2021. Contains 348329 sequences. (Running on oeis4.)