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A317664 as a simple table

na(n)
01
14
296
33520
4181584
512046208
6976817408
793618157824
810353263884352
91297682198608960
10181792547403610112
1128148715766252519424
124773717142486206475264
13879979421777903153737728
14175192929827140711780067328
1537462651348142346656294109184
168563418069261195349710481467648
172083773631690873034841394464054272

[1,4,96,3520,181584,12046208,976817408,
 93618157824,10353263884352,1297682198608960,
 181792547403610112,28148715766252519424,
 4773717142486206475264,879979421777903153737728,
 175192929827140711780067328,
 37462651348142346656294109184,
 8563418069261195349710481467648,
 2083773631690873034841394464054272]