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A304015 as a simple table

n a(n)
1 2
2 45
3 103
4 370
5 1318
6 4449
7 16187
8 57097
9 204138
10 731990
11 2619348
12 9409831
13 33795414
14 121433334
15 436597037
16 1569707036
17 5644843684
18 20301268685
19 73014988681
20 262618746090
21 944600144394
22 3397648654668
23 12221222404734

[2,45,103,370,1318,4449,16187,57097,204138,731990,
 2619348,9409831,33795414,121433334,436597037,
 1569707036,5644843684,20301268685,73014988681,
 262618746090,944600144394,3397648654668,
 12221222404734]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)