OFFSET
1,2
COMMENTS
Conjecture: this is a permutation of odd numbers.
b(n) = (a(n)-1)/2 begins: 0, 2, 1, 4, 3, 6, 5, 10, 8, 7, 21, 22, 14, 9, 20, 12, 11, 29, 19, 13, 17.
PROG
(Python)
import math
for i in range(1<<16):
s = (i*i) ^ ((i+1)*(i+1))
r = int(math.sqrt(s));
if s == r*r:
print str(r)+', ',
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Alex Ratushnyak, Apr 08 2013
STATUS
approved