This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A274548 Least number k such that k and k+1 are the sum of two nonzero squares in exactly n ways. 1
 17, 985, 33524, 19720, 116643124, 2263924, 411769906249, 7342945, 2027986649, 1348336249 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(2) = 985 because 985 = 12^2 + 29^2 = 16^2 + 27^2 and 986 = 5^2 + 31^2 = 19^2 + 25^2. CROSSREFS Cf. A000404, A016032. Sequence in context: A262386 A298302 A166188 * A266860 A221299 A258304 Adjacent sequences:  A274545 A274546 A274547 * A274549 A274550 A274551 KEYWORD nonn,more AUTHOR Altug Alkan, Jun 27 2016 EXTENSIONS a(5)-a(10) from Giovanni Resta, Jun 28 2016 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)