OFFSET
1,2
COMMENTS
LINKS
G. C. Greubel, Rows n=1..100 of triangle, flattened
FORMULA
T(i,j) = Sum_{n>=1} floor(j*(1+sqrt(2))^(i-n)).
EXAMPLE
Northwest corner:
1 2 4 5 ...
3 6 11 14 ...
8 17 28 37 ...
22 45 70 93 ...
...
MATHEMATICA
T[n_, k_] := Sum[Floor[k*(1 + Sqrt[2])^(n - j)], {j, 1, 100}]; Table[T[k + 1, n - k], {n, 1, 10}, {k, 0, n-1}]//Flatten (* G. C. Greubel, Aug 18 2018 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Dec 07 2010
STATUS
approved