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A242536 as a simple table

na(n)
01
12
24
312
426
566
6160
7386
8946
92292
105582
1113578
1233016
1380330
14195370
15475236
161155974
172811762
186839416
1916636178
2040466002
2198429844
22239421374
23582370554
241416562360
253445657082
268381242522
2720386597380
2849588514390
29120619477410
30293395730296

[1,2,4,12,26,66,160,386,946,2292,5582,13578,33016,
 80330,195370,475236,1155974,2811762,6839416,
 16636178,40466002,98429844,239421374,582370554,
 1416562360,3445657082,8381242522,20386597380,
 49588514390,120619477410,293395730296]