A158955 First differences of A061241.

36, 18, 18, 18, 54, 72, 18, 36, 36, 18, 18, 18, 54, 18, 18, 90, 54, 18, 54, 18, 18, 18, 126, 54, 90, 36, 18, 18, 18, 36, 90, 18, 18, 54, 18, 108, 18, 36, 126, 18, 36, 36, 54, 36, 72, 18, 54, 18, 36, 126, 18, 72, 18, 18, 54, 18, 36, 36, 54, 36, 144, 54, 18, 18, 90, 36, 18, 36, 162, 18

Offset

1,1

Comments

Six prime modulo classes are A061237, A061238, A061239, A061240, A061241 and A061242

with remainders 1, 2, 4, 5, 7, and 8 (mod 9).

Links

Table of n, a(n) for n=1..70.

Mathematica

Differences[Select[Prime[Range[500]], Mod[#, 9]==7&]] (* Harvey P. Dale, Oct 13 2022 *)

Crossrefs

Cf. A158910.

Sequence in context: A008894 A033973 A033356 * A065784 A081726 A196044

Adjacent sequences: A158952 A158953 A158954 * A158956 A158957 A158958

Keyword

nonn,less

Author

Paul Curtz, Apr 01 2009

Extensions

Edited and extended by R. J. Mathar, Apr 04 2009

Status

approved