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A131924 as a simple table

na(n)
01
14
210
320
436
562
6106
7184
8328
9602
101134
112180
124252
138374
1416594
1533008
1665808
17131378
18262486
19524668
201048996
212097614
224194810
238389160
2416777816
2533555082
2667109566
27134218484
28268436268
29536871782
301073742754
312147484640

[1,4,10,20,36,62,106,184,328,602,1134,2180,4252,
 8374,16594,33008,65808,131378,262486,524668,
 1048996,2097614,4194810,8389160,16777816,33555082,
 67109566,134218484,268436268,536871782,1073742754,
 2147484640]