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A261045 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 2
6 5
7 32
8 93
9 261
10 1082
11 3253
12 12307
13 40809
14 153392
15 525417
16 1892876
17 6847161
18 25256461
19 91268129
20 335852960
21 1239350769
22 4606651034
23 17073491494
24 63523866957
25 237953442636
26 892247156886
27 3346127378391
28 12603121634857
29 47642071407103

[0,0,0,1,2,5,32,93,261,1082,3253,12307,40809,
 153392,525417,1892876,6847161,25256461,91268129,
 335852960,1239350769,4606651034,17073491494,
 63523866957,237953442636,892247156886,
 3346127378391,12603121634857,47642071407103]

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Last modified May 10 11:28 EDT 2024. Contains 372387 sequences. (Running on oeis4.)