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A051923 as a simple table

n a(n)
0 1
1 9
2 42
3 140
4 378
5 882
6 1848
7 3564
8 6435
9 11011
10 18018
11 28392
12 43316
13 64260
14 93024
15 131784
16 183141
17 250173
18 336490
19 446292
20 584430
21 756470
22 968760
23 1228500
24 1543815
25 1923831
26 2378754
27 2919952
28 3560040
29 4312968
30 5194112
31 6220368
32 7410249
33 8783985
34 10363626

[1,9,42,140,378,882,1848,3564,6435,11011,18018,
 28392,43316,64260,93024,131784,183141,250173,
 336490,446292,584430,756470,968760,1228500,
 1543815,1923831,2378754,2919952,3560040,4312968,
 5194112,6220368,7410249,8783985,10363626]

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Last modified June 3 09:48 EDT 2024. Contains 373057 sequences. (Running on oeis4.)