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A247556 as a simple table

na(n)
00
11
23
37
412
520
630
744
865
980
1096
11143
12165
13199
14224
15306
16332
17415
18443
19591
20624
21678
22716
23934
24973
251134
261174
271449
281491
291674
301720
312113
322161
332468
342517
352855
362906
372961
383245
393302
403711
413772
424081
434148
444603
454673
465557
475628
485917
495989

[0,1,3,7,12,20,30,44,65,80,96,143,165,199,224,306,
 332,415,443,591,624,678,716,934,973,1134,1174,
 1449,1491,1674,1720,2113,2161,2468,2517,2855,2906,
 2961,3245,3302,3711,3772,4081,4148,4603,4673,5557,
 5628,5917,5989]