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A280474 as a simple table

n a(n)
1 1
2 6
3 30
4 158
5 846
6 4446
7 22734
8 113310
9 552654
10 2647390
11 12492366
12 58202526
13 268228430
14 1224529758
15 5544352206
16 24921415326
17 111297979854
18 494186360670
19 2182903872334
20 9596971862430
21 42012203555406
22 183197641092446

[1,6,30,158,846,4446,22734,113310,552654,2647390,
 12492366,58202526,268228430,1224529758,5544352206,
 24921415326,111297979854,494186360670,
 2182903872334,9596971862430,42012203555406,
 183197641092446]

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Last modified June 16 01:53 EDT 2024. Contains 373412 sequences. (Running on oeis4.)