A320041 Primes that are values of A215240.

3, 13, 6163, 8311, 12097, 13159, 14957, 18433, 21061, 23627, 24571, 27061, 29863, 35617, 40897, 44221, 45307, 45737, 45821, 67421, 68113, 69313, 71237, 75377, 82903, 89227, 89269, 89671, 94543, 100483, 101533, 101833, 113683, 114827, 118903, 121763, 122167, 125933, 131581, 131617, 143461, 144061

Offset

1,1

Comments

Values of A215240(A320061), sorted.

Links

Robert Israel, Table of n, a(n) for n = 1..594

Example

a(3) = 6163 is in the sequence because it is prime and A215240(264) = 6163.

Maple

N:= 10^5: # to get all terms <= N
f:= n -> convert(numtheory:-invphi(n), `+`):
Res:= {}:
for n from 1 to N do
  v:= f(n);
  if isprime(v) and v <= N then
     Res:= Res union {v}
  fi
od:
Res;

Crossrefs

Cf. A215240, A320061.

Sequence in context: A108583 A127855 A087333 * A016104 A112856 A007523

Adjacent sequences: A320038 A320039 A320040 * A320042 A320043 A320044

Keyword

nonn

Author

Robert Israel and J. M. Bergot, Oct 03 2018

Status

approved