id:A046208 - OEIS Search Results

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In Leibniz's Harmonic Triangle, write the numerator first and then the denominator of each element to the right of the central elements.

+0
17

1, 2, 1, 3, 1, 12, 1, 4, 1, 20, 1, 5, 1, 60, 1, 30, 1, 6, 1, 105, 1, 42, 1, 7, 1, 280, 1, 168, 1, 56, 1, 8, 1, 504, 1, 252, 1, 72, 1, 9, 1, 1260, 1, 840, 1, 360, 1, 90, 1, 10, 1, 2310, 1, 1320, 1, 495, 1, 110, 1, 11, 1, 5544, 1, 3960, 1, 1980, 1, 660, 1, 132, 1, 12, 1, 10296, 1 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.`
	CROSSREFS	`Cf. A003506.` `Sequence in context: A090559 A098570 A122048 this_sequence A006241 A137764 A057082` `Adjacent sequences: A046205 A046206 A046207 this_sequence A046209 A046210 A046211`
	KEYWORD	`tabf,nonn,easy`
	AUTHOR	`Mohammad K. Azarian (ma3(AT)evansville.edu)`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 13 1999`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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