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A248451 as a simple table

na(n)
192
23000
339072
4263212
51233820
64497352
713682340
836288604
986517940
10189292652
11385999820
12742178660
131357677856
142379662756
154019142092
166571207968
1710440102864
1816169225028
1924476993264
2036299258256
2152839159000

[92,3000,39072,263212,1233820,4497352,13682340,
 36288604,86517940,189292652,385999820,742178660,
 1357677856,2379662756,4019142092,6571207968,
 10440102864,16169225028,24476993264,36299258256,
 52839159000]