OFFSET
1,3
LINKS
Harvey P. Dale, Rows n = 1..141 of triangle, flattened
Paulo Ribenboim, FFF (Favorite Fibonacci Flowers), Fib. Quart. 43 (No. 1, 2005), 3-14.
FORMULA
T(n, k) = Lucas(g), where g = gcd(n, k), if n/g and k/g are odd; = 2 if n/g or k/g are even and 3|g; = 1 otherwise.
MATHEMATICA
Flatten[Table[GCD[LucasL[n], LucasL[k]], {n, 20}, {k, n}]] (* Harvey P. Dale, Nov 23 2012 *)
PROG
(PARI) for(n=1, 10, for(k=1, n, print1(gcd(fibonacci(n+1) + fibonacci(n-1), fibonacci(k+1) + fibonacci(k-1)), ", "))) \\ G. C. Greubel, Dec 17 2017
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Nov 28 2005
STATUS
approved