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A305777 as a simple table

na(n)
31
43
57
614
730
857
9119
10224
11460
12867
131761
143338
156734
1612861
1725843
1849748
1999744
20193431
21387365
22756062
231513138
242969265
255940567
2611708072
2723420228
2846317195
2992642569
30183707186
31367430742
32730111269
331460255291
342906227196
355812519912
3611582124159

[1,3,7,14,30,57,119,224,460,867,1761,3338,6734,
 12861,25843,49748,99744,193431,387365,756062,
 1513138,2969265,5940567,11708072,23420228,
 46317195,92642569,183707186,367430742,730111269,
 1460255291,2906227196,5812519912,11582124159]