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A026962 as a simple table

n a(n)
1 1
2 6
3 24
4 108
5 406
6 1572
7 5961
8 22788
9 87209
10 335010
11 1290376
12 4983162
13 19286891
14 74797176
15 290586771
16 1130716508
17 4406049037
18 17191077082
19 67152699384
20 262594530318
21 1027851765350
22 4026831276662
23 15788979175102
24 61954847930374
25 243278117470476
26 955907159445522

[1,6,24,108,406,1572,5961,22788,87209,335010,
 1290376,4983162,19286891,74797176,290586771,
 1130716508,4406049037,17191077082,67152699384,
 262594530318,1027851765350,4026831276662,
 15788979175102,61954847930374,243278117470476,
 955907159445522]

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Last modified December 4 09:51 EST 2021. Contains 349485 sequences. (Running on oeis4.)