A048550 a(n+1) is the next smallest prime beginning with a(n), initial prime is 3.

3, 31, 311, 3119, 31193, 3119309, 31193093, 311930933, 31193093317, 311930933179, 3119309331797, 311930933179703, 31193093317970371, 3119309331797037107, 311930933179703710759, 31193093317970371075907

Offset: 0

Author

Patrick De Geest, May 15 1999

Keywords

• nonn
• base

Links

• Robert Israel, Table of n, a(n) for n = 0..328

Crossrefs

Cf. A048549, A048551, A048552, A048553, A048554, A048555, A048556.

Programs

Maple

f:= proc(n) local d,a;
  for d from 1 do
    for a from 10^d*n+1 by 2 to 10^d*(n+1) do
      if isprime(a) then return a fi
  od od
end proc:
R:= 3: x:= 3:
for i from 2 to 30 do
  x:= f(x);
  R:= R, x;
od:
R; # Robert Israel, Dec 13 2023