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A339609 as a simple table

na(n)
10
20
34
410
522
639
761
888
9120
10157
11199
12246
13298
14355
15417
16484
17556
18633
19715
20802
21894
22991
231093
241200
251312
261429
271551
281678
291810
301947
312089
322236
332388
342545
352707
362874
373046
383223
393405
403592
413784
423981
434183
444390
454602
464819
475041
485268
495500
505737

[0,0,4,10,22,39,61,88,120,157,199,246,298,355,417,
 484,556,633,715,802,894,991,1093,1200,1312,1429,
 1551,1678,1810,1947,2089,2236,2388,2545,2707,2874,
 3046,3223,3405,3592,3784,3981,4183,4390,4602,4819,
 5041,5268,5500,5737]