A274548 Least number k such that k and k+1 are the sum of two nonzero squares in exactly n ways.

17, 985, 33524, 19720, 116643124, 2263924, 411769906249, 7342945, 2027986649, 1348336249

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