id:A111909 - OEIS Search Results

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A111909

Numbers that can not be represented as a^4 + b^2 with a, b > 0.

+0
1

1, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 19, 21, 22, 23, 24, 27, 28, 29, 30, 31, 33, 34, 35, 36, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 51, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 83, 84, 86, 87, 88 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`3 cannot be represented as a^4 + b^2 and thus is in this sequence while 10 = 1^4 + 3^2 is not.`
	CROSSREFS	`Cf. A055394, A022549.` `Adjacent sequences: A111906 A111907 A111908 this_sequence A111910 A111911 A111912` `Sequence in context: A085925 A107907 A080804 this_sequence A058654 A047517 A039064`
	KEYWORD	`nonn`
	AUTHOR	`Stefan Steinerberger (hansibal(AT)hotmail.com), Nov 25 2005`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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