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A219515 as a simple table

n a(n)
1 4
2 5
3 24
4 68
5 187
6 465
7 1090
8 2430
9 5181
10 10575
11 20714
12 39046
13 71023
14 124990
15 213360
16 354136
17 572847
18 904971
19 1398924
20 2119700
21 3153253
22 4611718
23 6639574
24 9420858
25 13187545
26 18229215
27 24904134
28 33651882
29 45007667
30 59618470
31 78261172

[4,5,24,68,187,465,1090,2430,5181,10575,20714,
 39046,71023,124990,213360,354136,572847,904971,
 1398924,2119700,3153253,4611718,6639574,9420858,
 13187545,18229215,24904134,33651882,45007667,
 59618470,78261172]

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Last modified April 24 11:49 EDT 2024. Contains 371936 sequences. (Running on oeis4.)