1091546r
[Commentary:
The left hand column begins with a population of 2002,
from which the sequence 1, 5, 15, ..., 4335, 4840 is successively subtracted,
while the sequence 996, 1340, ..., 4840, 4335 is successively added,
giving rise to the sequence 2002, 2997, 4332, ....
The right hand column begins with a population of 5005, from which the sequence 1, 6, 21, ...,1287, 2002 is successively subtracted, while the sequence 2997, 4332,..., 25927, 30492 is successively added, giving rise to the sequence 5005, 8001, 12327, ....]
The right hand column begins with a population of 5005, from which the sequence 1, 6, 21, ...,1287, 2002 is successively subtracted, while the sequence 2997, 4332,..., 25927, 30492 is successively added, giving rise to the sequence 5005, 8001, 12327, ....]