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A107381 as a simple table

na(n)
04
13
29
317
440
592
6215
7506
81200
92861
106848
1116436
1239523
1395162
14229328
15552977
161333920
173218612
187767575
1918747986
2045254200
21109241261
22263712248
23636626156
241536900483
253710323442

[4,3,9,17,40,92,215,506,1200,2861,6848,16436,
 39523,95162,229328,552977,1333920,3218612,7767575,
 18747986,45254200,109241261,263712248,636626156,
 1536900483,3710323442]