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A208878 as a simple table

na(n)
1715
25826959
340380275500
4271499374919883
51820216057105650386
612201956787655438957014
781798476241280856702695038
8548357000894509223687629476021
93676054154412185019451007694406065

[715,5826959,40380275500,271499374919883,
 1820216057105650386,12201956787655438957014,
 81798476241280856702695038,
 548357000894509223687629476021,
 3676054154412185019451007694406065]