A356769 Semiprime gaps (A065516) in the order of first occurrences.

2, 3, 1, 4, 6, 7, 5, 11, 9, 8, 10, 14, 13, 12, 19, 15, 17, 20, 16, 18, 24, 22, 21, 25, 28, 27, 30, 32, 38, 23, 31, 26, 36, 35, 34, 29, 47, 33, 40, 41, 54, 50, 43, 55, 39, 48, 37, 42, 45, 44, 53, 70, 46, 56, 74, 52, 62, 51, 66, 49, 58, 68, 59, 63, 67, 60, 57, 61, 72, 64, 65, 76, 69, 73, 75, 82, 85

Offset

1,1

Links

Table of n, a(n) for n=1..77.

Mathematica

s={2}; n=6; Do[m=n+1; While[PrimeOmega[m]!= 2, m++]; If[FreeQ[s, m-n], AppendTo[s, m-n]; Print[{n, m-n}]]; n=m, {10^8}]; s

Crossrefs

Cf. A065516, A001358.

Sequence in context: A073809 A303648 A298364 * A111776 A189187 A299714

Adjacent sequences: A356766 A356767 A356768 * A356770 A356771 A356772

Keyword

nonn

Author

Zak Seidov, Aug 27 2022

Status

approved