A368396 Prime numbers in Narayana's cows sequence A000930.

2, 3, 13, 19, 41, 277, 1873, 8641, 17098272199297

Offset: 1

Author

José E. Solsona, Dec 22 2023

Keywords

• nonn

Comments

The next terms are too large to show here: a(10) and a(11) have 1036 and 4274 digits, respectively (see A170954). - Jon E. Schoenfield, Dec 29 2023

Crossrefs

Primes in A000930.

Cf. A000040, A170954.

Programs

Mathematica

a[0] = 1; a[1] = a[2] = 1; a[n_] := a[n] = a[n-1] + a[n-3]; Select[Table[a[n],  {n, 0, 400}], PrimeQ]

Formula

a(n) = A000930(A170954(n)).

A000040 INTERSECT A000930.