id:A046574 - OEIS Search Results

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Distinct numbers in writing first numerator and then denominator of the central elements of the 1/4-Pascal triangle (by row).

+0
1

1, 4, 5, 2, 19, 35, 259, 483, 1815, 6864, 52195, 99671, 382109, 1469650, 5668327, 21915550, 84913470, 329624730, 2563431075, 4991324415, 19463777025, 75992317170, 297026449005, 1162147683450, 4551257541090, 17839099909800 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...`
	CROSSREFS	`Cf. A046563.` `Sequence in context: A111624 A019815 A046572 this_sequence A019743 A010663 A016494` `Adjacent sequences: A046571 A046572 A046573 this_sequence A046575 A046576 A046577`
	KEYWORD	`nonn`
	AUTHOR	`Mohammad K. Azarian (ma3(AT)evansville.edu)`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 14 1999`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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