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A256540 as a simple table

na(n)
01
15
220
358
4136
5282
6532
7931
81540
92432
103692
115427
127760
1310829
1414800
1519858
1626207
1734085
1843752
1955491
2069624
2186499
22106491
23130019
24157532
25189509
26226479
27269005
28317683
29373165
30436140
31507334
32587535
33677571
34778311
35890691
361015691
371154336

[1,5,20,58,136,282,532,931,1540,2432,3692,5427,
 7760,10829,14800,19858,26207,34085,43752,55491,
 69624,86499,106491,130019,157532,189509,226479,
 269005,317683,373165,436140,507334,587535,677571,
 778311,890691,1015691,1154336]