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A283197 as a simple table

n a(n)
1 0
2 0
3 6
4 36
5 176
6 824
7 3668
8 15808
9 66640
10 276184
11 1129482
12 4570084
13 18329920
14 72981648
15 288779688
16 1136580576
17 4452663936
18 17372989712
19 67541322638
20 261743811012
21 1011439313456
22 3898369209992
23 14990343112316
24 57519762677984

[0,0,6,36,176,824,3668,15808,66640,276184,1129482,
 4570084,18329920,72981648,288779688,1136580576,
 4452663936,17372989712,67541322638,261743811012,
 1011439313456,3898369209992,14990343112316,
 57519762677984]

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)