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A187494 as a simple table

na(n)
431
441
453
463
475
485
499
5012
5121
5227
5341
5446
5574
5699
57137
58153
59203
60307
61414
62464
63612
64788
651126
661292
671645
682039
692614
703291
714120
725127
736356
747180
759786

[1,1,3,3,5,5,9,12,21,27,41,46,74,99,137,153,203,
 307,414,464,612,788,1126,1292,1645,2039,2614,3291,
 4120,5127,6356,7180,9786]