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A157057 as a simple table

n a(n)
1 2
2 48
3 642
4 6040
5 44130
6 264936
7 1356194
8 6077196
9 24314490
10 88206140
11 293744154
12 907129236
13 2619716554
14 7125357540
15 18363363690
16 45076309166
17 105864434424
18 238815143406
19 519252051080
20 1091481669390
21 2224042468032
22 4403475647758
23 8489857618992
24 15969368635950

[2,48,642,6040,44130,264936,1356194,6077196,
 24314490,88206140,293744154,907129236,2619716554,
 7125357540,18363363690,45076309166,105864434424,
 238815143406,519252051080,1091481669390,
 2224042468032,4403475647758,8489857618992,
 15969368635950]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)