A220729 - OEIS

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A220729 as a simple table

n	a(n)
1	1
2	16
3	534
4	29310
5	1485872
6	78144195
7	4067687187
8	212706905400
9	11106137334222
10	580235608693971
11	30307625049945769
12	1583199541947366392
13	82700087992036283508
14	4319976719534879507298
15	225660175403712971157580

[1,16,534,29310,1485872,78144195,4067687187, 212706905400,11106137334222,580235608693971, 30307625049945769,1583199541947366392, 82700087992036283508,4319976719534879507298, 225660175403712971157580]

[1,16,534,29310,1485872,78144195,4067687187,
 212706905400,11106137334222,580235608693971,
 30307625049945769,1583199541947366392,
 82700087992036283508,4319976719534879507298,
 225660175403712971157580]