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A090378 as a simple table

na(n)
01
13
27
319
453
5147
6409
71151
83255
99241
1026267
1174895
12213775
13611463
141750277
155017901

[1,3,7,19,53,147,409,1151,3255,9241,26267,74895,
 213775,611463,1750277,5017901]