Method of Diophantus
m n h b d
- - - - -
2 1 4 3 5
3 1 6 8 10 multiple of (3,4,5) above
4 1 8 15 17
5 1 10 24 26 multiple of (5,12,13) below
6 1 12 35 37
7 1 14 48 50 multiple of (7,24,25) below
..........................................
3 2 12 5 13
4 2 16 12 20 multiple of (3,4,5) above
5 2 20 21 29
6 2 24 32 40 multiple of (3,4,5) above
7 2 28 45 53
..........................................
4 3 24 7 25
5 3 30 16 34 multiple of (8,15,17) above
6 3 36 27 45 multiple of (3,4,5) above
7 3 42 40 58 multiple of (20,21,29) above
Ralph Abraham, 17 April 1996.