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A222900 as a simple table

n a(n)
1 1
2 4
3 14
4 75
5 411
6 2522
7 15919
8 103627
9 683480
10 4554799
11 30542304
12 205785953
13 1391485044
14 9436529666
15 64150640719
16 437015936703
17 2982527052975
18 20387828050502
19 139566607631735
20 956650211233825
21 6564964362464004

[1,4,14,75,411,2522,15919,103627,683480,4554799,
 30542304,205785953,1391485044,9436529666,
 64150640719,437015936703,2982527052975,
 20387828050502,139566607631735,956650211233825,
 6564964362464004]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)