A022762 (n-th 8k+1 prime plus n-th 8k+7 prime)/8.

3, 8, 13, 17, 21, 24, 30, 40, 48, 51, 56, 60, 67, 72, 77, 84, 90, 99, 102, 105, 119, 126, 130, 134, 136, 140, 155, 160, 174, 177, 191, 198, 203, 210, 220, 224, 230, 237, 243, 246, 258, 264, 268, 278, 280, 285, 292, 299, 306, 318, 324, 336, 342

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Module[{prs=Prime[Range[300]], s, o, len}, s=Select[prs, Mod[#, 8]==1&]; o= Select[ prs, Mod[#, 8]==7&]; len=Min[Length[s], Length[o]]; Total[#]/8&/@ Thread[ {Take[s, len], Take[o, len]}]] (* Harvey P. Dale, May 11 2017 *)

Crossrefs

Sequence in context: A310300 A310301 A310302 * A310303 A022807 A292655

Adjacent sequences: A022759 A022760 A022761 * A022763 A022764 A022765

Keyword

nonn

Author

Clark Kimberling

Status

approved