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A252971 as a simple table

n a(n)
1 0
2 1
3 18
4 153
5 770
6 2859
7 8694
8 22924
9 54272
10 118057
11 239798
12 460207
13 841930
14 1478451
15 2505634
16 4116442
17 6579440
18 10261761
19 15657290
20 23420901
21 34409666
22 49732043
23 70806142
24 99428264
25 137853008
26 188886345
27 255993166
28 343420923

[0,1,18,153,770,2859,8694,22924,54272,118057,
 239798,460207,841930,1478451,2505634,4116442,
 6579440,10261761,15657290,23420901,34409666,
 49732043,70806142,99428264,137853008,188886345,
 255993166,343420923]

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