A340744 Primes in A340618, in the order in which they occur.

31, 23, 19, 43, 73, 53, 43, 37, 61, 43, 83, 73, 43, 73, 53, 67, 79, 73, 61, 59, 173, 151, 109, 223, 163, 109, 127, 109, 109, 233, 109, 109, 163, 139, 113, 109, 109, 181, 109, 109, 523, 353, 199, 383, 331, 199, 223, 313, 199, 173, 163, 271, 229, 211, 199, 199, 751, 503, 433, 307, 229, 313, 2411

Offset

1,1

Links

Table of n, a(n) for n=1..63.

Formula

a(n) = A316650(A340618(n)).

Example

a(4) = A316650(23) = 43 is the fourth term in A316650 that is prime.

Maple

f:= proc(n) local a, b, c, p;
  c:= convert(convert(n, base, 10), `+`);
  a:= floor(n/c);
  b:= n mod c;
  p:= 10^(1+ilog10(b))*a+b;
  if isprime(p) then p fi;
end proc:
map(f, [$1..1000]);

Crossrefs

Cf. A316650, A340618.

Sequence in context: A298724 A299558 A348624 * A361315 A291471 A276992

Adjacent sequences: A340741 A340742 A340743 * A340745 A340746 A340747

Keyword

nonn,look

Author

J. M. Bergot and Robert Israel, Jan 18 2021

Status

approved