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A209405 as a simple table

na(n)
01
12
23
36
48
515
621
734
847
974
1099
11151
12201
13287
14383
15540
16701
17970
181255
191688
202171
212882
223657
234801
246058
257819
269816
2712566
2815619
2919826
3024540
3130812
3237950
3347319
3457901
3571769
3687435
37107525
38130482
39159660
40192721
41234633
42282240
43341656
44409549

[1,2,3,6,8,15,21,34,47,74,99,151,201,287,383,540,
 701,970,1255,1688,2171,2882,3657,4801,6058,7819,
 9816,12566,15619,19826,24540,30812,37950,47319,
 57901,71769,87435,107525,130482,159660,192721,
 234633,282240,341656,409549]