The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #6 Nov 15 2021 04:40:04
%S 3,37,1117,11177,223547,26825647,268256477,40238471557,13278695613817,
%T 1195082605243537,191213216838965927,38242643367793185407,
%U 6883675806202773373267
%N Beginning with 3, primes of the form: least multiple of the previous term followed by a 7. Beginning with 3, a(n) is the least prime of the form k*a(n-1)*10 +7.
%K base,nonn
%O 1,1
%A _Amarnath Murthy_, Jan 03 2006
%E More terms from _Joshua Zucker_, Jan 11 2006