id:A114751 - OEIS Search Results

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The following triangle contains n consecutive numbers beginning from n in ascending order if n is odd else in descnding order. Sequence contains the triangle by rows.

+0
3

1, 3, 2, 3, 4, 5, 7, 6, 5, 4, 5, 6, 7, 8, 9, 11, 10, 9, 8, 7, 6, 7, 8, 9, 10, 11, 12, 13, 15, 14, 13, 12, 11, 10, 9, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`1` `3 2` `3 4 5` `7 6 5 4` `5 6 7 8 9` `11 10 9 8 7 6` `...`
	MAPLE	`for n from 1 to 14 do if n mod 2 = 1 then print(seq(k, k=n..2n-1)) else print(seq(2n-k, k=1..n)) fi od; # yields sequence in triangular form (Deutsch)`
	CROSSREFS	`Cf. A114752, A114753.` `Sequence in context: A035634 A091563 A035366 this_sequence A132408 A091821 A086035` `Adjacent sequences: A114748 A114749 A114750 this_sequence A114752 A114753 A114754`
	KEYWORD	`easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 15 2005`
	EXTENSIONS	`More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jan 26 2006`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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