A107576 a(n)=perimeter of n-th triangle listed at A107572.

9, 11, 12, 13, 13, 14, 15, 15, 15, 16, 16, 17, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26

Offset

1,1

Comments

The number of perimeters equal to n+6 is A005044(n).

Links

Table of n, a(n) for n=1..70.

Example

The first 5 integer-sided scalene triangles (a,b,c) with a<b<c are (2,3,4), (2,4,5), (3,4,5), (2,5,6), (3,4,6), of which the perimeters are 9,11,12,13,13.

Crossrefs

Cf. A107572, A107573, A107574, A107575, A107577, A005044, A070080.

Sequence in context: A172185 A098728 A233408 * A263772 A031954 A043631

Adjacent sequences: A107573 A107574 A107575 * A107577 A107578 A107579

Keyword

nonn

Author

Clark Kimberling, May 16 2005

Status

approved