S000500


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

4, 6, 14, 19, 36, 94, 124, 246, 644, 844, 1686, 4414, 5779, 11556, 30254, 39604, 79206, 207364, 271444, 542886, 1421294, 1860499, 3720996, 9741694, 12752044, 25504086, 66770564, 87403804, 174807606, 457652254, 599074579, 1198149156, 3136795214, 4106118244

1

S000500

This is the union of the terms in S000497, S000498, and S000499. The sequence satisfies an order 9 linear recurrence t(n) = 8*t(n-3) - 8*t(n-6) + t(n-9).

T. D. Noe, Plot of 600 terms

T. D. Noe, Table of 600 terms

Eric W. Weisstein, MathWorld: Lucas Number

(Mma) LinearRecurrence[{0, 0, 8, 0, 0, -8, 0, 0, 1}, {4, 6, 14, 19, 36, 94, 124, 246, 644}, 40]

Cf. S000491-S000499.

nonn

T. D. Noe, Feb 24 2015

© Tony D Noe 2014-2015