login
Concatenation of first two digits and last two digits of n-th Mersenne prime A000668(n).
5

%I #8 Mar 14 2020 07:08:43

%S 33,77,3131,1227,8191,1371,5287,2147,2351,6111,1627,1727,6851,5327,

%T 1087,1407,4451,2571,1991,2807,4711,3451,2891,4371,4451,4011,8571,

%U 5307,5207,5111,7447,1787,1291,4127,8111,6251,1271,4391,9271,1247,2907,1247,3171,1271,2027,1651,3111

%N Concatenation of first two digits and last two digits of n-th Mersenne prime A000668(n).

%H L. C. Noll, <a href="http://www.isthe.com/chongo/tech/math/prime/mersenne.html">Mersenne Prime Digits</a>.

%Y Cf. A000668, A080173, A104511, A138816, A138817, A138840, A138841, A138862, A138864, A138865, A138866.

%K nonn,base

%O 1,1

%A _Omar E. Pol_, Apr 02 2008

%E More terms from _Jinyuan Wang_, Mar 14 2020