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A040380 as a simple table

na(n)
020
140
240
340
440
540
640
740
840
940
1040
1140
1240
1340
1440
1540
1640
1740
1840
1940
2040
2140
2240
2340
2440
2540
2640
2740
2840
2940
3040
3140
3240
3340
3440
3540
3640
3740
3840
3940
4040
4140
4240
4340
4440
4540
4640
4740
4840
4940
5040
5140
5240
5340
5440
5540
5640
5740
5840
5940
6040
6140
6240

[20,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,
 40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,
 40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,
 40,40,40,40,40,40,40,40,40,40,40,40,40,40,40]