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A063014 Number of solutions to n^2=b^2+c^2 [with c>=b>=0]. 8
1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 1, 1, 1, 3, 2, 1, 1, 2, 2, 1, 1, 1, 2, 2, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 3, 2, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 1, 5, 1, 1, 2, 1, 2, 1, 1, 2, 2, 3, 1, 1, 2, 1, 2, 1, 2, 1, 1, 5, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 1, 2, 1, 1, 3, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..102.

Michael Gilleland, Some Self-Similar Integer Sequences

FORMULA

a(0) = 1; a(n) = A046080(n) + 1 for n > 0. - [amended by Georg Fischer, Jan 25 2020]

EXAMPLE

a(0)=1 since 0^2=0^2+0^2; a(5)=2 since 5^2=0^2+5^2=3^2+4^2; a(25)=3 since 25^2=0^2+25^2=7^2+24^2=15^2+20^2.

CROSSREFS

Cf. A046080.

Column k=2 of A255212.

Sequence in context: A157196 A300410 A293451 * A286361 A097295 A220572

Adjacent sequences:  A063011 A063012 A063013 * A063015 A063016 A063017

KEYWORD

nonn

AUTHOR

Henry Bottomley, Jul 26 2001

STATUS

approved

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Last modified April 16 05:26 EDT 2021. Contains 343030 sequences. (Running on oeis4.)