A186301 a(n) = A007521(n) - 2.

3, 11, 27, 35, 51, 59, 99, 107, 147, 155, 171, 179, 195, 227, 267, 275, 291, 315, 347, 371, 387, 395, 419, 459, 507, 539, 555, 611, 651, 659, 675, 699, 707, 731, 755, 771, 795, 819, 827, 851, 875, 939, 995, 1011, 1019, 1059, 1067, 1091, 1107, 1115, 1179, 1211

Offset: 1

Author

Marco Matosic, Feb 17 2011

Keywords

• nonn

Crossrefs

Cf. A007521.

Extensions

a(52) corrected by Georg Fischer, Jun 27 2020