id:A047697 - OEIS Search Results

Search: id:A047697

Displaying 1-1 of 1 results found.

page 1

Smallest positive number that can be written in n ways as a sum of two (not necessarily positive) coprime cubes.

+0
2

1, 91, 3367, 16776487, 506433677359393 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`R. K. Guy, Unsolved Problems in Number Theory, Section D1.`
	LINKS	`D. J. Bernstein, Enumerating solutions to p(a) + q(b) = r(c) + s(d)`
	CROSSREFS	`Cf. A047696.` `Sequence in context: A119150 A008394 A133416 this_sequence A096054 A129965 A017807` `Adjacent sequences: A047694 A047695 A047696 this_sequence A047698 A047699 A047700`
	KEYWORD	`nonn,nice,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

page 1

Search completed in 0.002 seconds

Last modified November 27 14:34 EST 2009. Contains 167570 sequences.