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A117419 as a simple table

n a(n)
0 1
1 2
2 4
3 9
4 23
5 66
6 209
7 724
8 2722
9 11054
10 48221
11 224549
12 1109099
13 5778542
14 31599830
15 180605495
16 1074867618
17 6641877098
18 42500291654
19 280917956734
20 1913770121847
21 13412187670520
22 96528097452230
23 712332226596239
24 5382561715509704

[1,2,4,9,23,66,209,724,2722,11054,48221,224549,
 1109099,5778542,31599830,180605495,1074867618,
 6641877098,42500291654,280917956734,1913770121847,
 13412187670520,96528097452230,712332226596239,
 5382561715509704]

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Last modified March 2 05:08 EST 2024. Contains 370460 sequences. (Running on oeis4.)