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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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

T(n,n) = A022846(n).

LINKS

Table of n, a(n) for n=1..81.

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: A061775 A225634 A247134 * A221983 A029118 A129382

Adjacent sequences:  A080601 A080602 A080603 * A080605 A080606 A080607

KEYWORD

nonn,tabl

AUTHOR

Reinhard Zumkeller, Feb 25 2003

STATUS

approved

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Last modified November 17 08:39 EST 2019. Contains 329217 sequences. (Running on oeis4.)