A102131 Iccanobirt prime indices (1 of 15): Indices of prime numbers in A102111.

4, 6, 7, 19, 30, 175, 265, 591, 1124, 1369, 4359, 10935, 20422, 20559, 26993

Offset: 1

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

• nonn
• more
• base

Comments

No more terms through 8000.

a(16) > 50000. - Robert Price, Nov 07 2018

Crossrefs

Cf. A000040, A102111, A102132-A102145.

Programs

Mathematica

a[n_] := a[n] = a[n - 1] + a[n - 2] + IntegerReverse[a[n - 3]];
a[0] = 0; a[1] = 0; a[2] = 1;
Select[Range[0, 5000], PrimeQ[a[#]] &] (* Robert Price, Apr 10 2020 *)

Formula

A102111(a(n)) = A102151(n).

Extensions

a(12)-a(15) from Robert Price, Nov 07 2018