OFFSET
0,2
COMMENTS
Table 10 in Fraenkel is incorrect from n=6 onward. - Nathaniel Johnston, Apr 28 2011
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 0..10000
A. S. Fraenkel, New games related to old and new sequences, INTEGERS, Electronic J. of Combinatorial Number Theory, Vol. 4, Paper G6, 2004.
FORMULA
See A099356.
MAPLE
a:=proc(n) option remember: local j, t: if(n=0)then return 0: else t:=a(n-1)+1: for j from 0 to n-1 do if(t=b(j))then return t+1: elif(t<b(j))then break: fi: od: return t: fi: end:
b:=proc(n) option remember: if(n=0)then return 0: else return b(n-1) + (-1)^a(n-1)*a(n-1) + a(n) + 1: fi: end:
seq(b(n), n=0..70); # Nathaniel Johnston, Apr 28 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 16 2004
EXTENSIONS
Edited and corrected by Nathaniel Johnston, Apr 28 2011
STATUS
approved