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A316842 Three-column table read by rows giving primitive integer sides of proper triangles (i,j,k) with i >= j >= k >= 1, j+k > i, gcd(i,j,k) = 1. 11
1, 1, 1, 2, 2, 1, 3, 2, 2, 3, 3, 1, 3, 3, 2, 4, 3, 2, 4, 3, 3, 4, 4, 1, 4, 4, 3, 5, 3, 3, 5, 4, 2, 5, 4, 3, 5, 4, 4, 5, 5, 1, 5, 5, 2, 5, 5, 3, 5, 5, 4, 6, 4, 3, 6, 5, 2, 6, 5, 3, 6, 5, 4, 6, 5, 5, 6, 6, 1, 6, 6, 5, 7, 4, 4, 7, 5, 3, 7, 5, 4, 7, 5, 5, 7, 6, 2, 7, 6, 3, 7, 6, 4, 7, 6, 5, 7, 6, 6, 7, 7, 1, 7, 7, 2, 7, 7, 3, 7, 7, 4, 7, 7, 5, 7, 7, 6, 8, 5, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..9000

EXAMPLE

Table begins:

[1,1,1],

[2,2,1],

[3,2,2],

[3,3,1],

[3,3,2],

[4,3,2],

[4,3,3],

[4,4,1],

[4,4,3],

[5,3,3],

[5,4,2],

...

CROSSREFS

There are A123323(k) rows that begin with k.

The three columns are A316846, A316847, A316848.

A316850 is a compressed version.

See A316841 for all triples (including imprimitive triples).

See A316852 and A317181 & A317183 for perimeter and area.

Other related sequences: A051493, A070080, A070081, A070082, A070110.

Sequence in context: A039994 A326394 A228425 * A329466 A263107 A286528

Adjacent sequences:  A316839 A316840 A316841 * A316843 A316844 A316845

KEYWORD

nonn,tabf,look

AUTHOR

N. J. A. Sloane, Jul 23 2018, following a suggestion from Donald S. McDonald

STATUS

approved

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Last modified August 6 12:33 EDT 2020. Contains 336246 sequences. (Running on oeis4.)