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A057416 as a simple table

na(n)
184
1930
20184
21894
223885
2315386
2456956
25199620
26669702
272166462
286798186
2920786496
3062160079
31182336358
32525931258
331494726848
344192885357
3511625457180
3631899800729
3786717361496
38233754981005
39625311996048

[4,30,184,894,3885,15386,56956,199620,669702,
 2166462,6798186,20786496,62160079,182336358,
 525931258,1494726848,4192885357,11625457180,
 31899800729,86717361496,233754981005,625311996048]