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A046899 as a simple table

na(n)
01
11
22
31
43
56
61
74
810
920
101
115
1215
1335
1470
151
166
1721
1856
19126
20252
211
227
2328
2484
25210
26462
27924
281
298
3036
31120
32330
33792
341716
353432
361
379
3845
39165
40495
411287
423003
436435
4412870
451
4610
4755
48220
49715
502002
515005
5211440
5324310
5448620
551
5611
5766
58286
591001

[1,1,2,1,3,6,1,4,10,20,1,5,15,35,70,1,6,21,56,126,
 252,1,7,28,84,210,462,924,1,8,36,120,330,792,1716,
 3432,1,9,45,165,495,1287,3003,6435,12870,1,10,55,
 220,715,2002,5005,11440,24310,48620,1,11,66,286,
 1001]