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A321110 as a simple table

n a(n)
3 2
4 8
5 36
6 156
7 666
8 2860
9 12336
10 53518
11 233874
12 1029134
13 4559664
14 20335346
15 91254770
16 411885192
17 1869127696
18 8524561158
19 39058221662
20 179724281242
21 830256254372
22 3849435933628
23 17907743518356
24 83566689375980
25 391087227771308
26 1835146738581226
27 8632600618453808

[2,8,36,156,666,2860,12336,53518,233874,1029134,
 4559664,20335346,91254770,411885192,1869127696,
 8524561158,39058221662,179724281242,830256254372,
 3849435933628,17907743518356,83566689375980,
 391087227771308,1835146738581226,8632600618453808]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)