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A291949 as a simple table

na(n)
31
44
510
624
749
880
9162
10230
11451
12444
13884
141036
151845
161840
173026
182412
194921
204960
218022
227854
2310925
249864
2516150
2615860
2722545
2822204
2930218
3021300
3141261
3239776
3351678
3451102
3567025
3658680
3783990
3882802
39104715
40102480
41126362
42107184
43155445
44152020

[1,4,10,24,49,80,162,230,451,444,884,1036,1845,
 1840,3026,2412,4921,4960,8022,7854,10925,9864,
 16150,15860,22545,22204,30218,21300,41261,39776,
 51678,51102,67025,58680,83990,82802,104715,102480,
 126362,107184,155445,152020]