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A047749 as a simple table

na(n)
01
11
21
32
43
57
612
730
855
9143
10273
11728
121428
133876
147752
1521318
1643263
17120175
18246675
19690690
201430715
214032015
228414640
2323841480
2450067108
25142498692
26300830572
27859515920
281822766520
295225264024
3011124755664
3131983672534

[1,1,1,2,3,7,12,30,55,143,273,728,1428,3876,7752,
 21318,43263,120175,246675,690690,1430715,4032015,
 8414640,23841480,50067108,142498692,300830572,
 859515920,1822766520,5225264024,11124755664,
 31983672534]