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A168905 as a simple table

na(n)
01
136
21260
344100
41543500
554022500
61890787500
766177562500
82316214687500
981067514062500
102837362992187500
1199307704726562500
123475769665429687500
13121651938290039062500
144257817840151367187500
15149023624405297851562500

[1,36,1260,44100,1543500,54022500,1890787500,
 66177562500,2316214687500,81067514062500,
 2837362992187500,99307704726562500,
 3475769665429687500,121651938290039062500,
 4257817840151367187500,149023624405297851562500]