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A320404 as a simple table

n a(n)
1 4
2 14
3 47
4 156
5 548
6 1970
7 7049
8 25364
9 91307
10 328700
11 1183518
12 4261468
13 15344635
14 55253618
15 198959548
16 716424463
17 2579743890
18 9289300111
19 33449490192
20 120447025154
21 433713239426
22 1561742028021
23 5623619418043
24 20249884464928

[4,14,47,156,548,1970,7049,25364,91307,328700,
 1183518,4261468,15344635,55253618,198959548,
 716424463,2579743890,9289300111,33449490192,
 120447025154,433713239426,1561742028021,
 5623619418043,20249884464928]

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Last modified April 16 17:36 EDT 2024. Contains 371749 sequences. (Running on oeis4.)