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A292055 as a simple table

na(n)
10
21
315
490
5435
61926
78175
833930
9139035
10565326
112287335
129224370
1337116435
14149110326
15598350495
162399080410
179613258635
1838503648926
19154166045655
20617117746050
212469830101635
229883394613126
2339545794780815
24158219815525290
25632989146141435

[0,1,15,90,435,1926,8175,33930,139035,565326,
 2287335,9224370,37116435,149110326,598350495,
 2399080410,9613258635,38503648926,154166045655,
 617117746050,2469830101635,9883394613126,
 39545794780815,158219815525290,632989146141435]