id:A080458 - OEIS Search Results

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a(1)=4; for n>1, a(n)=a(n-1) if n is already in the sequence, a(n)=a(n-1)+4 otherwise.

+0
14

4, 8, 12, 12, 16, 20, 24, 24, 28, 32, 36, 36, 40, 44, 48, 48, 52, 56, 60, 60, 64, 68, 72, 72, 76, 80, 84, 84, 88, 92, 96, 96, 100, 104, 108, 108, 112, 116, 120, 120, 124, 128, 132, 132, 136, 140, 144, 144, 148, 152, 156, 156, 160, 164, 168, 168, 172, 176 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence, J. Integer Seqs., Vol. 6 (2003), #03.2.2.` `B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence (math.NT/0305308)`
	FORMULA	`a(n) = 4+4*(n-2-floor((n-4)/4)).`
	CROSSREFS	`Cf. A080455-A080457, A080036, A080037.` `Sequence in context: A057099 A120427 A060830 this_sequence A147646 A080229 A167523` `Adjacent sequences: A080455 A080456 A080457 this_sequence A080459 A080460 A080461`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com) and Benoit Cloitre, Mar 20 2003`

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

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