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A257360 as a simple table

n a(n)
1 674856
2 451584
3 475608
4 1249924
5 2980712
6 6012304
7 12278736
8 30603024
9 76329692
10 159516900
11 325547732
12 771395076
13 1870800360
14 4019813604
15 8515864500
16 19860701184
17 46654887392
18 102038080356
19 221226236476
20 508023966564

[674856,451584,475608,1249924,2980712,6012304,
 12278736,30603024,76329692,159516900,325547732,
 771395076,1870800360,4019813604,8515864500,
 19860701184,46654887392,102038080356,221226236476,
 508023966564]

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Last modified October 24 11:34 EDT 2021. Contains 348225 sequences. (Running on oeis4.)