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A251640 as a simple table

na(n)
110560127
22000922455
3381543775543
472419349199493
513754155206272959
62612757595388089625
7496271873758017462775
894263944561519739600469
917904985214572029962053397
103400956636618899216826213209

[10560127,2000922455,381543775543,72419349199493,
 13754155206272959,2612757595388089625,
 496271873758017462775,94263944561519739600469,
 17904985214572029962053397,
 3400956636618899216826213209]