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A164589 as a simple table

n a(n)
0 1
1 4
2 15
3 58
4 221
5 848
6 3243
7 12422
8 47545
9 182044
10 696903
11 2668114
12 10214549
13 39105896
14 149713635
15 573168542
16 2194332529
17 8400844852
18 32162017407
19 123129948778
20 471394019405
21 1804697680256
22 6909153496347
23 26451190754486
24 101266455983401
25 387691247248204

[1,4,15,58,221,848,3243,12422,47545,182044,696903,
 2668114,10214549,39105896,149713635,573168542,
 2194332529,8400844852,32162017407,123129948778,
 471394019405,1804697680256,6909153496347,
 26451190754486,101266455983401,387691247248204]

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Last modified May 21 10:20 EDT 2024. Contains 372735 sequences. (Running on oeis4.)