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A215340 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 6
5 16
6 40
7 107
8 307
9 893
10 2597
11 7646
12 22878
13 69162
14 210402
15 644098
16 1984598
17 6149428
18 19143220
19 59840692
20 187781992
21 591343894
22 1868106990
23 5918537492
24 18800935948
25 59869902152
26 191081899648
27 611138052146
28 1958410654202
29 6287175115130
30 20218209139666
31 65120537016867

[1,1,1,2,6,16,40,107,307,893,2597,7646,22878,
 69162,210402,644098,1984598,6149428,19143220,
 59840692,187781992,591343894,1868106990,
 5918537492,18800935948,59869902152,191081899648,
 611138052146,1958410654202,6287175115130,
 20218209139666,65120537016867]

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Last modified April 25 09:26 EDT 2024. Contains 371967 sequences. (Running on oeis4.)