A158908 First differences of A061238.

9, 18, 18, 36, 18, 36, 36, 18, 36, 36, 18, 36, 36, 36, 54, 18, 18, 90, 18, 54, 18, 18, 144, 18, 18, 54, 18, 18, 36, 36, 72, 18, 54, 18, 36, 72, 18, 54, 72, 18, 36, 36, 36, 54, 54, 54, 90, 36, 54, 72, 54, 36, 18, 18, 54, 54, 36, 54, 36, 18, 72, 18, 18, 18, 54, 18, 72, 36, 36, 18, 18

Offset

1,1

Comments

Obviously all entries are multiples of 9.

First differences of some the 6 prime modulo classes shown in A061237 to A061241 are also in A158910 and A158955.

Links

Table of n, a(n) for n=1..71.

Crossrefs

Sequence in context: A034728 A129855 A250769 * A202188 A352960 A060993

Adjacent sequences: A158905 A158906 A158907 * A158909 A158910 A158911

Keyword

nonn,less

Author

Paul Curtz, Mar 30 2009

Extensions

Edited and extended by R. J. Mathar, Apr 06 2009

Status

approved