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A115422 Integers n > 0 such that n XOR 20*n = 21*n. 4
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 33, 36, 48, 64, 65, 66, 67, 72, 73, 96, 97, 128, 129, 130, 131, 132, 134, 144, 146, 192, 193, 194, 195, 256, 257, 258, 259, 260, 262, 264, 265, 268, 288, 289, 292, 384, 385, 386, 387, 388, 390, 512, 513, 514, 515, 516, 518 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..59.

FORMULA

This sequence also seems to satisfy:

5*a(n) XOR 16*a(n) = 21*a(n);

5*a(n) XOR 17*a(n) = 20*a(n); etc.

CROSSREFS

Cf. A003714 (Fibbinary numbers), A048715, A048718, A115423, A115424.

Sequence in context: A114334 A018690 A018452 * A018528 A018376 A018302

Adjacent sequences:  A115419 A115420 A115421 * A115423 A115424 A115425

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jan 22 2006

STATUS

approved

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Last modified June 19 02:31 EDT 2013. Contains 226386 sequences.