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A020714 as a simple table

na(n)
05
110
220
340
480
5160
6320
7640
81280
92560
105120
1110240
1220480
1340960
1481920
15163840
16327680
17655360
181310720
192621440
205242880
2110485760
2220971520
2341943040
2483886080
25167772160
26335544320
27671088640
281342177280
292684354560
305368709120
3110737418240

[5,10,20,40,80,160,320,640,1280,2560,5120,10240,
 20480,40960,81920,163840,327680,655360,1310720,
 2621440,5242880,10485760,20971520,41943040,
 83886080,167772160,335544320,671088640,1342177280,
 2684354560,5368709120,10737418240]