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A008490 as a simple table

na(n)
01
18
236
3120
4330
5792
61716
73432
86434
911432
1019412
1131704
1250058
1376728
14114564
15167112
16238722
17334664
18461252
19625976
20837642
211106520
221444500
231865256
242384418
253019752
263791348
274721816
285836490
297163640
308734692
3110584456
3212751362
3315277704

[1,8,36,120,330,792,1716,3432,6434,11432,19412,
 31704,50058,76728,114564,167112,238722,334664,
 461252,625976,837642,1106520,1444500,1865256,
 2384418,3019752,3791348,4721816,5836490,7163640,
 8734692,10584456,12751362,15277704]