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A223247 as a simple table

na(n)
17
218
318
460
5102
660
7168
8642
9642
10168
11528
124086
1311538
144086
15528
161536
1726034
18144582
19144582
2026034
211536
224704
23165894
242663082
255336844
262663082
27165894
284704
2913920
301057122
3133590454
32198634758
33198634758
3433590454
351057122
3613920

[7,18,18,60,102,60,168,642,642,168,528,4086,11538,
 4086,528,1536,26034,144582,144582,26034,1536,4704,
 165894,2663082,5336844,2663082,165894,4704,13920,
 1057122,33590454,198634758,198634758,33590454,
 1057122,13920]