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A204471 as a simple table

n a(n)
0 1
1 3370
2 108108
3 957332
4 4721127
5 16627422
6 47043624
7 114106128
8 246902225
9 489197948
10 903720482
11 1576984058
12 2624673317
13 4197566692
14 6488021194
15 9736993054
16 14241624013
17 20363359008
18 28536634496
19 39278092476
20 53196371385
21 71002416300
22 93520372350
23 121698990952

[1,3370,108108,957332,4721127,16627422,47043624,
 114106128,246902225,489197948,903720482,
 1576984058,2624673317,4197566692,6488021194,
 9736993054,14241624013,20363359008,28536634496,
 39278092476,53196371385,71002416300,93520372350,
 121698990952]

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Last modified December 7 18:28 EST 2023. Contains 367660 sequences. (Running on oeis4.)