A268185 a(n) = prime(n) + last digit of prime(n).

4, 6, 10, 14, 12, 16, 24, 28, 26, 38, 32, 44, 42, 46, 54, 56, 68, 62, 74, 72, 76, 88, 86, 98, 104, 102, 106, 114, 118, 116, 134, 132, 144, 148, 158, 152, 164, 166, 174, 176, 188, 182, 192, 196, 204, 208, 212, 226, 234, 238, 236, 248, 242, 252, 264

Offset

1,1

Comments

All terms are even.

Links

Table of n, a(n) for n=1..55.

Formula

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

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

Example

For the prime 19, we have: 19 + (19 modulo 10) = 28.

Mathematica

Table[Prime[n] + Mod[Prime[n], 10], {n, 100}] (* Alonso del Arte, Jan 28 2016 *)

Prog

(PARI) a(n) = prime(n) + prime(n) % 10; \\ Michel Marcus, Jan 28 2016
(PARI) lista(nn) = {forprime(p=2, nn, print1(p + p % 10, ", ")); } \\ Altug Alkan, Feb 04 2016
(Magma) [NthPrime(n) + (NthPrime(n) mod 10): n in [1..60]]; // Vincenzo Librandi, Jan 31 2016

Crossrefs

Cf. A000040, A007652.

Sequence in context: A255005 A137699 A144592 * A065073 A359157 A084997

Adjacent sequences: A268182 A268183 A268184 * A268186 A268187 A268188

Keyword

nonn,easy,base

Author

Emre APARI, Jan 28 2016

Status

approved