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A182389
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a(0)=1, a(n) = (a(n-1) + n) XOR n.
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3
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1, 3, 7, 9, 9, 11, 23, 25, 41, 59, 79, 81, 81, 83, 111, 113, 145, 179, 215, 249, 281, 315, 327, 329, 377, 395, 447, 449, 449, 451, 511, 513, 513, 515, 519, 521, 521, 523, 535, 537, 617, 699, 719, 721, 721, 723, 815, 881, 913, 1011, 1047, 1145
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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a(n) >= n.
a(n) >= a(n-1). - Daniel Leary, Aug 21 2016
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LINKS
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Ivan Panchenko, Table of n, a(n) for n = 0..1000
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FORMULA
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a(0)=1, a(n)=(a(n-1) + n) XOR n, where XOR is the bitwise exclusive-OR operator.
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EXAMPLE
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a(5) = (a(4)+5) XOR 5 = (9+5) XOR 5 = 14 XOR 5 = 11.
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PROG
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(Python)
a=1
for i in range(1, 55):
print(a, end=', ')
a += i
a ^= i
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CROSSREFS
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Cf. A182242, A182247.
Sequence in context: A331066 A179021 A096910 * A279615 A169968 A082768
Adjacent sequences: A182386 A182387 A182388 * A182390 A182391 A182392
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KEYWORD
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nonn,base
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AUTHOR
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Alex Ratushnyak, Apr 27 2012
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STATUS
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approved
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