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A270505 as a simple table

n a(n)
1 0
2 21
3 1137
4 132474
5 34889103
6 22383193638
7 35714928884139
8 144182981347081503
9 1486449414781831854123
10 39397028534591054436055983
11 2696910972157269626108160017520
12 478461426234650496975341723139740316

[0,21,1137,132474,34889103,22383193638,
 35714928884139,144182981347081503,
 1486449414781831854123,39397028534591054436055983,
 2696910972157269626108160017520,
 478461426234650496975341723139740316]

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Last modified June 25 15:24 EDT 2024. Contains 373705 sequences. (Running on oeis4.)