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A218984 as a simple table

n a(n)
0 4
1 17
2 75
3 333
4 1481
5 6589
6 29317
7 130445
8 580413
9 2582541
10 11490989
11 51129037
12 227498125
13 1012250573
14 4503998541
15 20040495309
16 89169978317
17 396760903885
18 1765383572173
19 7855056096461
20 34950991530189
21 155514078313677
22 691958296315085
23 3078861341887693

[4,17,75,333,1481,6589,29317,130445,580413,
 2582541,11490989,51129037,227498125,1012250573,
 4503998541,20040495309,89169978317,396760903885,
 1765383572173,7855056096461,34950991530189,
 155514078313677,691958296315085,3078861341887693]

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