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A055337 as a simple table

na(n)
136
1425
1590
16244
17591
181273
192566
204822
218654
2214836
2324566
2439352
2561389
2693357
27139008
28202865
29290976
30410584
31571094
32783583
331062145
341423226
351887252
362477916
373224154
384159173
395323025
406761359
418528427
4210685767
4313305718

[6,25,90,244,591,1273,2566,4822,8654,14836,24566,
 39352,61389,93357,139008,202865,290976,410584,
 571094,783583,1062145,1423226,1887252,2477916,
 3224154,4159173,5323025,6761359,8528427,10685767,
 13305718]