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A121879 as a simple table

n a(n)
1 0
2 1
3 1
4 1
5 2
6 9
7 70
8 901
9 18851
10 640033
11 35182964
12 3130643763
13 450777518908
14 105028031261801
15 39595117008180069
16 24152916346958580289
17 23838888839331110565174
18 38070681323495436614002589
19 98374616701023368879472124802
20 411304234356297381789636339794573

[0,1,1,1,2,9,70,901,18851,640033,35182964,
 3130643763,450777518908,105028031261801,
 39595117008180069,24152916346958580289,
 23838888839331110565174,
 38070681323495436614002589,
 98374616701023368879472124802,
 411304234356297381789636339794573]

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Last modified April 19 10:56 EDT 2024. Contains 371791 sequences. (Running on oeis4.)