A241678 2^p - 5 where p is prime.

-1, 3, 27, 123, 2043, 8187, 131067, 524283, 8388603, 536870907, 2147483643, 137438953467, 2199023255547, 8796093022203, 140737488355323, 9007199254740987, 576460752303423483, 2305843009213693947, 147573952589676412923, 2361183241434822606843

Offset: 1

Author

Vincenzo Librandi, Apr 29 2014

Keywords

• sign

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..200

Crossrefs

Cf. similar sequence listed in A241573.

Programs

Magma

[2^p-5: p in PrimesUpTo(100)];

Mathematica

Table[2^Prime[n] - 5, {n, 40}]