A046083 - OEIS

A046083

The smallest member 'a' of the Pythagorean triples (a,b,c) ordered by increasing c.

3, 6, 5, 9, 8, 12, 15, 7, 10, 20, 18, 16, 21, 12, 15, 24, 9, 27, 30, 14, 24, 20, 28, 33, 40, 36, 11, 39, 33, 25, 16, 32, 42, 48, 24, 45, 21, 30, 48, 18, 51, 40, 36, 13, 60, 39, 54, 35, 57, 65, 60, 28, 20, 48, 40, 63, 56, 60, 66, 36, 15, 69, 80, 45, 56, 72, 22, 27, 75, 44, 35

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Jean-François Alcover, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Pythagorean Triple.

MATHEMATICA

maxHypo = 125; hypotenuseQ[n_] := For[k = 1, True, k++, p = Prime[k]; Which[Mod[p, 4] == 1 && Divisible[n, p], Return[True], p > n, Return[False]]]; hypotenuses = Select[Range[maxHypo], hypotenuseQ]; red[c_] := {a, b, c} /. {ToRules[ Reduce[0 < a <= b && a^2 + b^2 == c^2, {a, b}, Integers]]}; Sort[Flatten[red /@ hypotenuses , 1], Last[#1] < Last[#2] &][[All, 1]] (* Jean-François Alcover, Oct 23 2012 *)

CROSSREFS

Cf. A046084, A009000.

Sequence in context: A334717 A334753 A350057 * A359805 A310127 A310128

Adjacent sequences: A046080 A046081 A046082 * A046084 A046085 A046086

KEYWORD

nonn

AUTHOR

Eric W. Weisstein

STATUS

approved