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A253674 as a simple table

n a(n)
1 1
2 10
3 40
4 931
5 3871
6 91180
7 379270
8 8934661
9 37164541
10 875505550
11 3641745700
12 85790609191
13 356853914011
14 8406604195120
15 34968041827330
16 823761420512521
17 3426511245164281
18 80720212606031890
19 335763133984272160
20 7909757073970612651
21 32901360619213507351

[1,10,40,931,3871,91180,379270,8934661,37164541,
 875505550,3641745700,85790609191,356853914011,
 8406604195120,34968041827330,823761420512521,
 3426511245164281,80720212606031890,
 335763133984272160,7909757073970612651,
 32901360619213507351]

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Last modified August 11 04:03 EDT 2020. Contains 336421 sequences. (Running on oeis4.)