id:A064766 - OEIS Search Results

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Fill a triangular array by rows by writing numbers 1, then 1 up to 2*3/2, then 1 up to 3*4/2, then 1 up to 4*5/2 and so on from 1 up to the n-th triangular number. The final elements of the rows form the sequence.

+0
15

1, 2, 2, 6, 5, 1, 8, 1, 10, 20, 10, 22, 7, 21, 36, 16, 33, 6, 25, 45, 11, 33, 56, 14, 39, 65, 14, 42, 71, 10, 41, 73, 1, 35, 70, 106, 23, 61, 100, 4, 45, 87, 130, 21, 66, 112, 159, 36, 85, 135, 186, 48, 101, 155, 210, 56, 113, 171, 230, 59, 120, 182, 245, 56, 121, 187 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`The array begins` `....1` `...1.2` `..3.1.2` `.2.4.5.6` `1.2.3.4.5`
	CROSSREFS	`Cf. A064865.` `Sequence in context: A062293 A054516 A062400 this_sequence A121178 A019749 A122070` `Adjacent sequences: A064763 A064764 A064765 this_sequence A064767 A064768 A064769`
	KEYWORD	`easy,nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Oct 18 2001`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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