S000499


Square root of numbers that are the sum of 5 unequal squares of Lucas numbers, case 3.

14, 94, 644, 4414, 30254, 207364, 1421294, 9741694, 66770564, 457652254, 3136795214, 21499914244, 147362604494, 1010038317214, 6922905616004, 47450300994814, 325229201347694, 2229154108439044, 15278849557725614, 104722792795640254

1

S000499

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}, {14, 94}, 40]

Cf. S000491-S000500.

nonn

T. D. Noe, Feb 24 2015

© Tony D Noe 2014-2015