|
%I #15 May 14 2020 11:30:26
%S 127787377,1510818931,3147482977,3307903909,3621408103,3964636549,
%T 7224979183,7881628361,8043354509,8740618759,10091655397,10164789521,
%U 10194261067,10380609119,10436432219,11472028801,12059694769,13887362681,14880879703,15197340049
%N Concatenation of prime p and nextprime(p) is prime -> cycles of 4 steps possible.
%C a(1)-a(5) found by Jo Yeong Uk (hyukjo(AT)sigma.chungnam.ac.kr).
%H Giovanni Resta, <a href="/A036341/b036341.txt">Table of n, a(n) for n = 1..4000</a>
%H Carlos Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_029.htm">Puzzle 29. P_i = P_(i-1) & nxtprm(P_(i-1)), P_i = prime for i => 1</a>, The Prime Puzzles and Problems Connection.
%Y Cf. A030459, A034593, A036339, A036340.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, Dec 15 1998
%E Offset corrected and terms a(6) and beyond added by _Giovanni Resta_, May 14 2020
|
