OFFSET
1,5
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..200
MATHEMATICA
Table[First[Differences[Table[Floor[(Pi/4)*n], {n, 0, 50}], n]], {n, 1, 50}]
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, Jun 06 2019
STATUS
approved