id:A158233 - OEIS Search Results

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A120070(n+1)*A120070(n+2) mod 9.

+0
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6, 4, 3, 0, 3, 6, 0, 3, 0, 0, 4, 0, 0, 4, 6, 0, 0, 6, 0, 6, 0, 0, 6, 3, 0, 3, 6, 3, 4, 0, 0, 4, 0, 0, 4, 0, 0, 6, 3, 0, 3, 6, 0, 0, 3, 0, 0, 6, 0, 6, 0, 0, 3, 3, 6, 4, 0, 0, 4, 0, 0, 4, 0, 0, 4, 3, 0, 3, 0, 0, 0, 3, 0, 6, 6, 0, 3, 6, 0, 3, 0, 0, 0, 3, 0, 6, 6, 0, 3, 0, 0, 4, 0, 0, 4, 0, 0, 4, 0, 0, 4, 0, 0, 4, 6 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: this contains only the numbers 0,3,4,6 (verified for the first 5000 terms).` `This multiply-modulo transformation is also used in the unrelated A157742, A158012, A158068, A158090.`
	MAPLE	`A120070 := proc(m, n) if m-1 >= n then m^2-n^2; else 0; fi; end:` `A120070flat := proc(n) i := 2 ; for m from 2 do for l from 1 to m-1 do if i = n then RETURN(A120070(m, l)) ; else i := i+1 ; fi; od: od: end:` `A158233 := proc(n) (A120070flat(n+1)*A120070flat(n+2) ) mod 9 ; end: seq(A158233(n), n=1..180) ; # R. J. Mathar, Apr 09 2009`
	CROSSREFS	`Sequence in context: A086036 A019849 A118421 this_sequence A093604 A011408 A157296` `Adjacent sequences: A158230 A158231 A158232 this_sequence A158234 A158235 A158236`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Mar 14 2009`
	EXTENSIONS	`Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 09 2009`

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

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