A285216 Indices of primes in A000219.

2, 4, 11, 30, 32, 40, 50, 85, 100, 237, 381, 733, 805, 882, 1015, 1650, 2439, 3163, 3335, 3506, 3675, 4152, 4446, 4576, 5010, 5101, 6045, 6760, 7412, 8178, 8562, 10026, 10527, 10888, 12406, 12693, 13479, 16109, 16978, 17962, 20696, 22483, 25383, 31458, 38956

Offset

1,1

Links

Vaclav Kotesovec, Table of n, a(n) for n = 1..82

Example

11 is in the sequence because A000219(11) = 859 is prime.

Mathematica

A000219 = Cases[Import["https://oeis.org/A000219/b000219.txt", "Table"], {_, _}][[All, 2]];
Flatten[Position[A000219, _?PrimeQ]] - 1 (* Jean-François Alcover, Sep 17 2020, as of todate, this only gives 27 terms *)

Crossrefs

Cf. A000219, A035359, A046063.

Sequence in context: A148149 A034769 A219017 * A212422 A189832 A193062

Adjacent sequences: A285213 A285214 A285215 * A285217 A285218 A285219

Keyword

nonn

Author

Vaclav Kotesovec, Apr 14 2017

Status

approved