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A278462 as a simple table

n a(n)
0 1
1 2
2 10
3 66
4 504
5 4148
6 35794
7 319384
8 2922472
9 27273568
10 258591700
11 2483951402
12 24121423518
13 236417231844
14 2335648036770
15 23234567806722
16 232536604918010
17 2339766365713070
18 23655013692855212
19 240175288588925992
20 2447961627258995826
21 25037715732340569328
22 256899046844874628732

[1,2,10,66,504,4148,35794,319384,2922472,27273568,
 258591700,2483951402,24121423518,236417231844,
 2335648036770,23234567806722,232536604918010,
 2339766365713070,23655013692855212,
 240175288588925992,2447961627258995826,
 25037715732340569328,256899046844874628732]

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)