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A200725 as a simple table

n a(n)
0 1
1 1
2 4
3 16
4 76
5 399
6 2206
7 12664
8 74790
9 451420
10 2772313
11 17267652
12 108821293
13 692609446
14 4445642625
15 28744599748
16 187047449289
17 1224027357216
18 8050074481917
19 53179900898596
20 352726704965748
21 2348036826102013
22 15682048658695168
23 105052549830928908
24 705678173069959645

[1,1,4,16,76,399,2206,12664,74790,451420,2772313,
 17267652,108821293,692609446,4445642625,
 28744599748,187047449289,1224027357216,
 8050074481917,53179900898596,352726704965748,
 2348036826102013,15682048658695168,
 105052549830928908,705678173069959645]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)