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A149480 as a simple table

n a(n)
0 1
1 1
2 4
3 13
4 57
5 232
6 1026
7 4535
8 20630
9 94513
10 439245
11 2054404
12 9687415
13 45916162
14 218754129
15 1046294862
16 5022478726
17 24180846137
18 116731776457
19 564812432954
20 2738508792600
21 13301878686123
22 64717290013574
23 315327835892313
24 1538432750901038
25 7514745797065005
26 36747136089253952
27 179872548740411287

[1,1,4,13,57,232,1026,4535,20630,94513,439245,
 2054404,9687415,45916162,218754129,1046294862,
 5022478726,24180846137,116731776457,564812432954,
 2738508792600,13301878686123,64717290013574,
 315327835892313,1538432750901038,7514745797065005,
 36747136089253952,179872548740411287]

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Last modified May 18 08:45 EDT 2024. Contains 372618 sequences. (Running on oeis4.)