A050859 Numbers n such that 215*2^n-1 is prime.

2, 6, 14, 16, 38, 60, 64, 124, 198, 200, 210, 296, 890, 1486, 1646, 1848, 1906, 2540, 6908, 10430, 10848, 13636, 17858, 18386, 18916, 20802, 23936, 30620, 32858, 34860, 34990, 36978, 54394, 55298, 58822, 88508, 109130, 224036, 331784