A242083
a(n) = 3^p - 2^p - 1, where p is prime(n).
Original entry on oeis.org
4, 18, 210, 2058, 175098, 1586130, 129009090, 1161737178, 94134790218, 68629840493970, 617671248800298, 450283768452043890, 36472994178147530850, 328256958598444055418, 26588814218220014932458, 19383245658672820642055730
Offset: 1
-
[3^p-2^p-1: p in PrimesUpTo(60)];
-
Table[(3^Prime[n] - 2^Prime[n] - 1), {n, 1, 30}]
3^#-2^#-1&/@Prime[Range[20]] (* Harvey P. Dale, Aug 05 2016 *)
-
a(n) = my(p = prime(n)); 3^p-2^p-1; \\ Michel Marcus, May 05 2014
-
[3^p-2^p-1 for p in primes(60)] # Bruno Berselli, May 12 2014
A242084
5^p - 4^p - 1, where p is prime.
Original entry on oeis.org
8, 60, 2100, 61740, 44633820, 1153594260, 745759583940, 18798608421180, 11850560210900460, 185976284546943991380, 4652001187058965190220, 72740686675902780452348340, 45469899385367953379053128420
Offset: 1
-
[5^p-4^p-1: p in PrimesUpTo(60)];
-
Table[5^Prime[n] - 4^Prime[n] - 1, {n, 1, 60}]
-
a(n) = my(p = prime(n)); 5^p - 4^p - 1; \\ Michel Marcus, May 05 2014
A209901
7^p - 6^p - 2 with p = prime(n).
Original entry on oeis.org
11, 125, 9029, 543605, 1614529685, 83828316389, 215703854542469, 10789535445362645, 26579017117027313525, 3183060102526390833854309, 156448938516521406467644085, 18500229372226631089176131976869, 44487435359130133495783012898708549
Offset: 1
543605 is in the sequence because 543605 = 7^7 - 6^7 - 2, and 7 is prime.
Showing 1-3 of 3 results.
Comments