id:A056646 - OEIS Search Results

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Square root of largest unitary square divisor of central binomial coefficient.

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1, 1, 1, 1, 1, 2, 1, 1, 3, 6, 1, 2, 2, 1, 3, 3, 1, 2, 1, 2, 2, 1, 1, 2, 10, 5, 10, 5, 3, 12, 3, 3, 1, 2, 5, 10, 10, 5, 3, 6, 2, 1, 2, 1, 5, 20, 15, 30, 42, 21, 14, 7, 7, 28, 2, 1, 1, 4, 1, 4, 4, 2, 21, 21, 7, 14, 7, 14, 6, 3, 1, 2, 2, 1, 10, 5, 35, 140, 7, 14, 126, 63, 2, 1, 5, 20, 90, 45, 3, 12 (list; graph; listen)

	OFFSET	`1,6`
	FORMULA	`a(n)=A000188[A001405(n)]/A055229[A001405(n)]= A056056(n)/A056059(n)`
	EXAMPLE	`n=28, binomial[28,14]=2.2.2.3.3.3.5.5.17.19.23. The square root of its largest square divisor is 30, while the largest unitary analogue is a(28)=30/6=5.`
	CROSSREFS	`A000188, A001405, A055229, A056056, A056059.` `Sequence in context: A156582 A156953 A156881 this_sequence A056056 A136462 A060517` `Adjacent sequences: A056643 A056644 A056645 this_sequence A056647 A056648 A056649`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 09 2000`

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

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