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A255151 as a simple table

na(n)
128
2158
31637
424076
5538898
618908787
71010639534
883099387548
910579222514675
102071872696148188
11624365603902164824
12290214158710091827505
13207944632244724181029851
14229540322271259189329446842

[28,158,1637,24076,538898,18908787,1010639534,
 83099387548,10579222514675,2071872696148188,
 624365603902164824,290214158710091827505,
 207944632244724181029851,
 229540322271259189329446842]