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A277483 as a simple table

n a(n)
0 0
1 0
2 2
3 6
4 40
5 340
6 3984
7 57050
8 982528
9 19616328
10 446355840
11 11384327438
12 321701896704
13 9973046260060
14 336499112011776
15 12274383608508450
16 481282311712489472
17 20185816487436968208
18 901732370496365076480
19 42742176871086712813974
20 2142556308913381810012160

[0,0,2,6,40,340,3984,57050,982528,19616328,
 446355840,11384327438,321701896704,9973046260060,
 336499112011776,12274383608508450,
 481282311712489472,20185816487436968208,
 901732370496365076480,42742176871086712813974,
 2142556308913381810012160]

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Last modified July 13 04:46 EDT 2024. Contains 374267 sequences. (Running on oeis4.)