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A080604
Triangular array of hypotenuses of right triangles with integer legs: T(n,k) = round(sqrt(n^2 + k^2)), 1 <= k <= n.
0
1, 2, 3, 3, 4, 4, 4, 4, 5, 6, 5, 5, 6, 6, 7, 6, 6, 7, 7, 8, 8, 7, 7, 8, 8, 9, 9, 10, 8, 8, 9, 9, 9, 10, 11, 11, 9, 9, 9, 10, 10, 11, 11, 12, 13, 10, 10, 10, 11, 11, 12, 12, 13, 13, 14, 11, 11, 11, 12, 12, 13, 13, 14, 14, 15, 16, 12, 12, 12, 13, 13, 13, 14, 14, 15, 16, 16, 17, 13, 13, 13
OFFSET
1,2
COMMENTS
T(n,n) = A022846(n).
EXAMPLE
Triangle begins:
1;
2, 3;
3, 4, 4;
4, 4, 5, 6;
5, 5, 6, 6, 7;
6, 6, 7, 7, 8, 8;
7, 7, 8, 8, 9, 9, 10;
...
CROSSREFS
Sequence in context: A356384 A225634 A247134 * A357815 A221983 A029118
KEYWORD
nonn,tabl
AUTHOR
Reinhard Zumkeller, Feb 25 2003
STATUS
approved