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A070212 as a simple table

na(n)
01
110
255
3220
4715
52001
64995
711385
824090
947905
1090376
11162955
12282490
13473110
14768570
151215126
161875015
172830620
184189405
196089710
208707501
2112264175
2217035525
2323361975
2431660200
2542436251
2656300310
2773983205
2896354820
29124444540
30159463876
31202831420
32256200285
33321488190

[1,10,55,220,715,2001,4995,11385,24090,47905,
 90376,162955,282490,473110,768570,1215126,1875015,
 2830620,4189405,6089710,8707501,12264175,17035525,
 23361975,31660200,42436251,56300310,73983205,
 96354820,124444540,159463876,202831420,256200285,
 321488190]