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A056003 as a simple table

na(n)
01
118
2135
3660
42475
57722
621021
751480
8115830
9243100
10481338
11906984
121637610
132848860
144796550
157845024
1612503007
1719468350
1829683225
1944401500
2065270205
2194427190
22134617275
23189329400
24262957500
25360988056
26490217508
27659002960
28877549860
291158240600

[1,18,135,660,2475,7722,21021,51480,115830,243100,
 481338,906984,1637610,2848860,4796550,7845024,
 12503007,19468350,29683225,44401500,65270205,
 94427190,134617275,189329400,262957500,360988056,
 490217508,659002960,877549860,1158240600]