id:A081964 - OEIS Search Results

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A081964

In the following triangle the n-th row contains n numbers relatively prime to n and not occurring in a previous row. a(1) = 1. Sequence contains the triangle by rows.

+0
6

1, 3, 5, 2, 4, 7, 9, 11, 13, 15, 6, 8, 12, 14, 16, 17, 19, 23, 25, 29, 31, 10, 18, 20, 22, 24, 26, 27, 21, 33, 35, 37, 39, 41, 43, 45, 28, 32, 34, 38, 40, 44, 46, 47, 49, 51, 53, 57, 59, 61, 63, 67, 69, 71, 73, 30, 36, 42, 48, 50, 52, 54, 56, 58, 60, 62, 55, 65, 77, 79, 83, 85 (list; table; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`Triangle begins:` `1` `3 5` `2 4 7` `9 11 13 15` `6 8 12 14 16` `...`
	CROSSREFS	`Cf. A081965, A081966.` `Sequence in context: A104807 A131793 A065186 this_sequence A082817 A084753 A163364` `Adjacent sequences: A081961 A081962 A081963 this_sequence A081965 A081966 A081967`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 03 2003`
	EXTENSIONS	`More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 08 2003`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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