A107622 Primes plus alternately 2 and 3.

4, 6, 7, 10, 13, 16, 19, 22, 25, 32, 33, 40, 43, 46, 49, 56, 61, 64, 69, 74, 75, 82, 85, 92, 99, 104, 105, 110, 111, 116, 129, 134, 139, 142, 151, 154, 159, 166, 169, 176, 181, 184, 193, 196, 199, 202, 213, 226, 229, 232, 235, 242, 243, 254, 259, 266, 271, 274, 279

Offset

1,1

Links

Table of n, a(n) for n=1..59.

Formula

A107622(n) = prime(n) + (3 - mod(n, 2)).

Mathematica

A107622[n_]:= Prime[n] + (3 - Mod[n, 2]) (* From Zak Seidov *)
Total[#]&/@Partition[Riffle[Prime[Range[100]], {2, 3}], 2] (* Harvey P. Dale, Dec 14 2010 *)

Crossrefs

Cf. A107620, A107621, 107623.

Sequence in context: A286485 A363189 A277572 * A049306 A358731 A023635

Adjacent sequences: A107619 A107620 A107621 * A107623 A107624 A107625

Keyword

easy,nonn

Author

Zak Seidov, May 18 2005

Status

approved