id:A160700 - OEIS Search Results

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a(n) = if n<16 then n else a(floor(n/16)) XOR (n mod 16).

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21

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14, 2, 3, 0, 1, 6, 7, 4, 5, 10, 11, 8, 9, 14, 15, 12, 13, 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12, 4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11, 5, 4, 7, 6, 1, 0, 3, 2, 13 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`A very simple hash function for the nonnegative integers.` `a(A000079(n))=A133145(n); a(A000302(n))=A010685(n); a(A001025(n))=A161452(n); a(A161440(n))=0; a(A161441(n))=1; a(A161442(n))=2; a(A161443(n))=3; a(A161444(n))=4; a(A161445(n))=5; a(A161446(n))=6; a(A161447(n))=7; a(A161448(n))=8; a(A161449(n))=9; a(A161450(n))=10; a(A161451(n))=11; a(A161452(n))=12; a(A161453(n))=13; a(A161454(n))=14; a(A161455(n))=15. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 10 2009]`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 0..10000`
	CROSSREFS	`Sequence in context: A124196 A139179 A130909 this_sequence A002377 A053836 A025483` `Adjacent sequences: A160697 A160698 A160699 this_sequence A160701 A160702 A160703`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 01 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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