S000498


Square root of numbers that are the sum of 5 unequal squares of Lucas numbers, case 2.

6, 36, 246, 1686, 11556, 79206, 542886, 3720996, 25504086, 174807606, 1198149156, 8212236486, 56287506246, 385800307236, 2644314644406, 18124402203606, 124226500780836, 851461103262246, 5836001222054886, 40000547451121956, 274167830935798806

1

S000498

Mentioned in S000496. These numbers satisfy the second order linear recurrence t(n) = 7*t(n-1) - t(n-2).

T. D. Noe, Plot of 200 terms

T. D. Noe, Table of 200 terms

Eric W. Weisstein, MathWorld: Lucas Number

(Mma) LinearRecurrence[{7, -1}, {6, 36}, 40]

Cf. S000491-S000500.

nonn

T. D. Noe, Feb 24 2015

© Tony D Noe 2014-2015