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A208405 as a simple table

na(n)
151
241914
340883360
440039156736
539216100214432
638410047476679936
737620564383817645696
836847308431734650845696
936089946042522268966513152
1035348150537672718536490582016
1134621601954234065647421901637632

[51,41914,40883360,40039156736,39216100214432,
 38410047476679936,37620564383817645696,
 36847308431734650845696,
 36089946042522268966513152,
 35348150537672718536490582016,
 34621601954234065647421901637632]