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A073977 as a simple table

n a(n)
1 1
2 4
3 9
4 36
5 180
6 972
7 6300
8 44928
9 297432
10 1784592
11 10349856
12 60466176
13 358108128
14 2145709440
15 12958657344
16 78364164096
17 472093588224
18 2832129868032
19 16957996040448
20 101554796888064
21 608764662139392
22 3652587972836352
23 21926115464435712
24 131621703842267136

[1,4,9,36,180,972,6300,44928,297432,1784592,
 10349856,60466176,358108128,2145709440,
 12958657344,78364164096,472093588224,
 2832129868032,16957996040448,101554796888064,
 608764662139392,3652587972836352,
 21926115464435712,131621703842267136]

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)