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A130679 as a simple table

n a(n)
1 1
2 4
3 15
4 84
5 470
6 3552
7 26796
8 255840
9 2435184
10 28114560
11 323405280
12 4380445440
13 59105255040
14 918796677120
15 14228252640000
16 249644312064000
17 4363865549568000
18 85297521899520000
19 1661265370695168000

[1,4,15,84,470,3552,26796,255840,2435184,28114560,
 323405280,4380445440,59105255040,918796677120,
 14228252640000,249644312064000,4363865549568000,
 85297521899520000,1661265370695168000]

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Last modified May 3 08:32 EDT 2024. Contains 372207 sequences. (Running on oeis4.)