0,13

The triples are sorted first according to their sum, then by the value of k, then by the value of j.

N. J. A. Sloane, The 6545 triples with i+j+k <= 32

i j k

-----

0 0 0

1 0 0

0 1 0

0 0 1

2 0 0

1 1 0

0 2 0

1 0 1

0 1 1

0 0 2

3 0 0

2 1 0

1 2 0

0 3 0

2 0 1

1 1 1

0 2 1

1 0 2

0 1 2

0 0 3

4 0 0

3 1 0

2 2 0

1 3 0

0 4 0

3 0 1

2 1 1

1 2 1

0 3 1

2 0 2

1 1 2

0 2 2

1 0 3

0 1 3

0 0 4

...

for n from 0 to 7 do

for k from 0 to n do

for j from 0 to n do

for i from 0 to n do

if i+j+k=n then lprint(i, j, k); fi;

od: od: od: od:

Cf. A144627-A144629 for the individual columns.

Sequence in context: A124762 A057558 A159708 this_sequence A025442 A128582 A101606

Adjacent sequences: A144622 A144623 A144624 this_sequence A144626 A144627 A144628

nonn,tabf

N. J. A. Sloane (njas(AT)research.att.com), Jan 18 2009