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A144070 as a simple table

na(n)
01
16
257
3488
44140
534128
6276792
72208312
817389710
9135354340
101042965042
117964675400
1260337114778
13453795079932
143390657365970
1525182770127240
16186007882964211
171366948744701066
189998341947058175
1972811720605519840
20528078809473488744
213815340122599096360

[1,6,57,488,4140,34128,276792,2208312,17389710,
 135354340,1042965042,7964675400,60337114778,
 453795079932,3390657365970,25182770127240,
 186007882964211,1366948744701066,9998341947058175,
 72811720605519840,528078809473488744,
 3815340122599096360]