[r-t] Interesting observations

[John David]

Interesting observations


For Plain bob le methods 13527486 L12 S1234

a   b   c

1   6   23546
2   5   65432
3   4   56423
4   3   42356
5   2   24365
6   1   53642
7   0   54236

Where :-
a is the number of leads before the first single
b is the number of leads after the second single before the interesting 
course appears
d is the co of the interesting course (re-arranged to start 87)


Is there a use for these interesting courses?  Is it worth calculating them 
for other (irregular) co (it seems to be a general phenomenon)?

John David