A253936 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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).