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A145720 as a simple table

n a(n)
1 6
2 13201
3 26799038
4 54402034953
5 110436104156566
6 224185237035795041
7 455095920746559777678
8 923844494930279312892313
9 1875403869612546258611618726
10 3807068931468973974702273122481
11 7728348055478147556099355827018718
12 15688542745551708069907717626574876073

[6,13201,26799038,54402034953,110436104156566,
 224185237035795041,455095920746559777678,
 923844494930279312892313,
 1875403869612546258611618726,
 3807068931468973974702273122481,
 7728348055478147556099355827018718,
 15688542745551708069907717626574876073]

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Last modified November 25 20:04 EST 2020. Contains 338625 sequences. (Running on oeis4.)