OFFSET
1,1
COMMENTS
For a guide to related sequences, see A204892.
EXAMPLE
a(1)=s(2)-s(1)=3-1=2
a(2)=s(3)-s(1)=8-1=7
a(3)=s(3)-s(2)=8-3=5
a(4)=s(4)-s(1)=21-1=20
a(5)=s(4)-s(2)=21-3=18
MATHEMATICA
(See the program at A205450.)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 27 2012
STATUS
approved