A028308 - OEIS

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A028308

Form a triangle with n numbers in top row; all other numbers are the product of their parents. E.g.: 4 2 3 5; 8 6 15; 48 90; 4320. The numbers must be positive and distinct and the final number is to be minimized.

1, 6, 48, 4320, 46448640, 10835538739200000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Problem 401 here suggested this sequence`
	EXAMPLE	`Solutions for n=1,2,... are 1; 2 3; 3 2 4; 4 2 3 5; 5 3 2 4 7`
	CROSSREFS	`A less interesting cousin of A028307.` `Sequence in context: A052744 A192769 A084259 * A173011 A061429 A048357` `Adjacent sequences: A028305 A028306 A028307 * A028309 A028310 A028311`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.