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A030197 as a simple table

n a(n)
-1 1
0 42
1 783
2 8672
3 65367
4 371520
5 1741655
6 7161696
7 26567946
8 90521472
9 288078201
10 864924480
11 2469235686
12 6748494912
13 17746495281
14 45086909440
15 111066966315
16 266057139456
17 621284327856
18 1417338712800
19 3164665156308

[1,42,783,8672,65367,371520,1741655,7161696,
 26567946,90521472,288078201,864924480,2469235686,
 6748494912,17746495281,45086909440,111066966315,
 266057139456,621284327856,1417338712800,
 3164665156308]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)