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A294486 as a simple table

na(n)
01
118
2150
3980
45670
530492
6156156
7772200
83719430
917551820
1081477396
11373173528
121690097500
137582037400
1433738060600
15149067936720
16654576544710
172858667619500
1812423860225700
1953760146239800
20231720014946420
21995238809839560
224260800401533000

[1,18,150,980,5670,30492,156156,772200,3719430,
 17551820,81477396,373173528,1690097500,7582037400,
 33738060600,149067936720,654576544710,
 2858667619500,12423860225700,53760146239800,
 231720014946420,995238809839560,4260800401533000]