pascal

echo "1" | ./pascal
1 1

./pascal 0
1
./pascal 1
1 1
./pascal 2
1 2 1
./pascal 3
1 3 3 1
./pascal 4
1 4 6 4 1
./pascal 5
1 5 10 10 5 1
./pascal 6
1 6 15 20 15 6 1
./pascal 7
1 7 21 35 35 21 7 1
./pascal 8
1 8 28 56 70 56 28 8 1
./pascal 9
1 9 36 84 126 126 84 36 9 1
...