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A280278 as a simple table

na(n)
01
12
23
35
48
512
618
726
838
954
1075
11103
12141
13190
14254
15337
16444
17580
18754
19973
201250
211597
222030
232568
243237
254061
265076
276322
287847
299705
3011968
3114711
3218033
3322043
3426873
3532677
3639642
3747972
3857924
3969787
4083904
41100667
42120547
43144072
44171876
45204677

[1,2,3,5,8,12,18,26,38,54,75,103,141,190,254,337,
 444,580,754,973,1250,1597,2030,2568,3237,4061,
 5076,6322,7847,9705,11968,14711,18033,22043,26873,
 32677,39642,47972,57924,69787,83904,100667,120547,
 144072,171876,204677]