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A220425 as a simple table

na(n)
01
15
212
323
440
567
6112
7191
8336
9611
101144
112191
124264
138387
1416608
1533023
1665824
17131395
18262504
19524687
201049016
212097635
224194832
238389183
2416777840
2533555107
2667109592
27134218511
28268436296
29536871811
301073742784
312147484671
324294968384
338589935747

[1,5,12,23,40,67,112,191,336,611,1144,2191,4264,
 8387,16608,33023,65824,131395,262504,524687,
 1049016,2097635,4194832,8389183,16777840,33555107,
 67109592,134218511,268436296,536871811,1073742784,
 2147484671,4294968384,8589935747]