OFFSET
0,4
COMMENTS
EXAMPLE
Difference array begins:
1 1 1 2 1 3 1 5 1 7 1 11
.. 0 0 1 -1 2 -2 4 -4 6 -6 10
..... 0 1 -2 3 -4 6 -8 10 -12 16
........ 1 -3 5 -7 10 -14 18 -22 28
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Jun 15 2007
EXTENSIONS
More terms and definition corrected by Omar E. Pol, Feb 05 2014
STATUS
approved