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A268894 as a simple table

n a(n)
1 1
2 4
3 144
4 4016
5 152230
6 14557092
7 1966154260
8 761411682704
9 411068703517542
10 684434716944151900
11 1572754514153890134760
12 11579615738168536799184984
13 117186519917858266359631481672
14 3877921919790491112398750141807648
15 176258463464553583688099296874564393850
16 26493868301658838913487471166447301509560736

[1,4,144,4016,152230,14557092,1966154260,
 761411682704,411068703517542,684434716944151900,
 1572754514153890134760,11579615738168536799184984,
 117186519917858266359631481672,
 3877921919790491112398750141807648,
 176258463464553583688099296874564393850,
 26493868301658838913487471166447301509560736]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)