A253936 a(n) = prime(n + (prime(n) mod 10)).

5, 11, 19, 31, 13, 23, 43, 59, 37, 67, 37, 67, 43, 59, 79, 67, 101, 67, 101, 73, 89, 127, 101, 137, 131, 103, 113, 149, 163, 137, 163, 137, 173, 191, 193, 157, 193, 179, 199, 191, 229, 191, 193, 211, 239, 257, 223, 233, 263, 277, 251, 283, 251, 257, 293, 277, 317, 277, 317, 283, 311, 313, 349, 313, 337, 367, 337, 379, 383

Offset

1,1

Links

Table of n, a(n) for n=1..69.

Zak Seidov, Color graph for first 100 terms

Formula

a(n) = A000040(n + A010879(A000040(n)),

a(n) = A000040(n + A007652(n)).

Example

n=1: p=prime(1)=2; p mod 10 = 2, prime(1+2) = 5 = a(1);
n=6: p=prime(6)=13; p mod 10 = 3, prime(6+3) = 23 = a(6).

Mathematica

Table[Prime[n+Mod[Prime[n], 10]], {n, 100}]

Prog

(PARI) a(n)=prime(n+prime(n)%10)

Crossrefs

Cf. A000040, A007652, A010879.

Sequence in context: A326665 A100920 A274946 * A191032 A003147 A106068

Adjacent sequences: A253933 A253934 A253935 * A253937 A253938 A253939

Keyword

nonn,base

Author

Zak Seidov, Jan 23 2015

Status

approved