A022764 (n-th 8k+3 prime plus n-th 8k+5 prime)/8.

1, 3, 6, 10, 14, 16, 23, 27, 35, 37, 42, 45, 51, 57, 65, 70, 75, 81, 87, 94, 101, 105, 111, 119, 126, 133, 138, 147, 153, 156, 162, 168, 171, 177, 181, 189, 198, 204, 207, 214, 220, 231, 243, 248, 255, 264, 270, 277, 284, 286, 296, 309, 314, 316

Offset

1,2

Links

Table of n, a(n) for n=1..54.

Formula

a(n) = (A007520(n) + A007521(n))/8 = A022763(n)/8. - Michel Marcus, Sep 30 2013

Prog

(PARI) lista(nn) = {prm = primes(nn); tp = select(p->(Mod(p, 8)==3), prm); fp = select(p->(Mod(p, 8)==5), prm); for (i = 1, min(#tp, #fp), print1((tp[i] + fp[i])/8, ", "); ); } \\ Michel Marcus, Sep 30 2013

Crossrefs

Sequence in context: A078060 A310057 A366648 * A310058 A310059 A310060

Adjacent sequences: A022761 A022762 A022763 * A022765 A022766 A022767

Keyword

nonn

Author

Clark Kimberling

Status

approved