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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

Table of n, a(n) for n=1..10.

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

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