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A240316型作为一个简单的表

n个a(n)
12
24
18
444
5184
6444
71826
84388
918022
1043300
11177856
12427348
131755406
144217900
1517325794
1641630540
17171004968
18410891868
191687812450
204055486788
2116658643286
2240027496964
23164420161936
24395069839924
251622820610830
263899323972492

[2,4,18,44,184,444,1826,4388,18022,43300,177856,427348,1755406,4217900,17325794,41630540,171004968,410891868,1687812450,4055486788,16658643286,40027496964,164420161936,395069839924,1622820610830,3899323972492]