id:A047972 - OEIS Search Results

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Distance of n-th prime to nearest square.

+0
3

1, 1, 1, 2, 2, 3, 1, 3, 2, 4, 5, 1, 5, 6, 2, 4, 5, 3, 3, 7, 8, 2, 2, 8, 3, 1, 3, 7, 9, 8, 6, 10, 7, 5, 5, 7, 12, 6, 2, 4, 10, 12, 5, 3, 1, 3, 14, 2, 2, 4, 8, 14, 15, 5, 1, 7, 13, 15, 12, 8, 6, 4, 17, 13, 11, 7, 7, 13, 14, 12, 8, 2, 6, 12, 18, 17, 11, 3, 1, 9, 19, 20, 10, 8, 2, 2, 8, 16, 20, 21 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`For each prime, find the closest square (preceding or succeeding); subtract, take absolute value.`
	EXAMPLE	`For 13, 9 is the preceding square, 16 is the succeeding. 13-9 = 4, 16-13 is 3, so the distance is 3.`
	CROSSREFS	`Cf. A047973.` `Sequence in context: A144911 A160650 A088904 this_sequence A088741 A004595 A071681` `Adjacent sequences: A047969 A047970 A047971 this_sequence A047973 A047974 A047975`
	KEYWORD	`easy,nonn,nice`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net)`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research