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A198474 as a simple table

n a(n)
1 2
2 12
3 76
4 492
5 3212
6 21036
7 137932
8 904812
9 5936396
10 38950572
11 255572812
12 1676946156
13 11003350412
14 72199015212
15 473737530316
16 3108453529452
17 20396281280012
18 133831275048876
19 878140974959692
20 5761968373855212

[2,12,76,492,3212,21036,137932,904812,5936396,
 38950572,255572812,1676946156,11003350412,
 72199015212,473737530316,3108453529452,
 20396281280012,133831275048876,878140974959692,
 5761968373855212]

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)