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A015616 as a simple table

na(n)
10
20
31
44
510
619
734
852
979
10109
11154
12196
13262
14325
15409
16493
17613
18712
19865
20997
211171
221336
231567
241747
252017
262251
272548
282818
293196
303472
313907
324267
334717
345125
355665
366079
376709
387222
397858
408410
419190
429748
4310609
4411299
4512127

[0,0,1,4,10,19,34,52,79,109,154,196,262,325,409,
 493,613,712,865,997,1171,1336,1567,1747,2017,2251,
 2548,2818,3196,3472,3907,4267,4717,5125,5665,6079,
 6709,7222,7858,8410,9190,9748,10609,11299,12127]