|
|
A237054
|
|
a(1)=1, a(n) = (a(n-1) + n) XOR n.
|
|
0
|
|
|
1, 1, 7, 15, 17, 17, 31, 47, 49, 49, 55, 79, 81, 81, 111, 111, 145, 177, 215, 255, 257, 257, 271, 319, 321, 321, 327, 383, 385, 385, 447, 511, 513, 513, 519, 527, 529, 529, 543, 623, 689, 753, 823, 847, 849, 849, 943, 1007, 1041, 1137, 1175, 1279, 1281, 1281
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
LINKS
|
|
|
FORMULA
|
a(1)=1, then a(n) = (a(n-1) + n) XOR n, where XOR is the bitwise exclusive-OR operator.
|
|
PROG
|
(Python)
a=1
for n in range(2, 77):
print str(a)+', ',
a = (a+n) ^ n
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|