A139286
a(n) = 2^(2*prime(n) - 1).
Original entry on oeis.org
8, 32, 512, 8192, 2097152, 33554432, 8589934592, 137438953472, 35184372088832, 144115188075855872, 2305843009213693952, 9444732965739290427392, 2417851639229258349412352, 38685626227668133590597632, 9903520314283042199192993792
Offset: 1
Cf.
A000040,
A000079,
A076274,
A139287,
A139288,
A139289,
A139290,
A139291,
A139292,
A139293,
A139294,
A139306.
A139287
2^(2p - 1) - 1, where p is prime.
Original entry on oeis.org
7, 31, 511, 8191, 2097151, 33554431, 8589934591, 137438953471, 35184372088831, 144115188075855871, 2305843009213693951, 9444732965739290427391, 2417851639229258349412351, 38685626227668133590597631
Offset: 1
Cf.
A000040,
A000079,
A076274,
A139286,
A139288,
A139289,
A139290,
A139291,
A139292,
A139293,
A139294,
A139306.
A139288
2^(2p - 1)/2, where p is prime.
Original entry on oeis.org
4, 16, 256, 4096, 1048576, 16777216, 4294967296, 68719476736, 17592186044416, 72057594037927936, 1152921504606846976, 4722366482869645213696, 1208925819614629174706176, 19342813113834066795298816
Offset: 1
A139289
(2^(2p - 1)/2)-1, where p is prime.
Original entry on oeis.org
3, 15, 255, 4095, 1048575, 16777215, 4294967295, 68719476735, 17592186044415, 72057594037927935, 1152921504606846975, 4722366482869645213695, 1208925819614629174706175, 19342813113834066795298815, 4951760157141521099596496895, 20282409603651670423947251286015, 83076749736557242056487941267521535
Offset: 1
-
Table[(2^(2 Prime[p] - 1)/2) - 1, {p, 1, 20}] (* Floris P. van Doorn and Jasper Mulder (florisvandoorn(AT)hotmail.com), Oct 12 2009 *)
More terms from
Floris P. van Doorn and Jasper Mulder (florisvandoorn(AT)hotmail.com), Oct 12 2009
A139292
2^(2p - 1)/8, where p is prime.
Original entry on oeis.org
1, 4, 64, 1024, 262144, 4194304, 1073741824, 17179869184, 4398046511104, 18014398509481984, 288230376151711744, 1180591620717411303424, 302231454903657293676544, 4835703278458516698824704
Offset: 1
A139293
(2^(2p - 1)/8)-1, where p is prime.
Original entry on oeis.org
0, 3, 63, 1023, 262143, 4194303, 1073741823, 17179869183, 4398046511103, 18014398509481983, 288230376151711743, 1180591620717411303423, 302231454903657293676543, 4835703278458516698824703
Offset: 1
Showing 1-6 of 6 results.