25 May
2006
25 May
'06
12:42 p.m.
Oops --- final paragraph should have read Inspection of the table of results suggests the almost-tidy explicit formula: for p-q odd, f(p, q, n) = [2^(n-(p+q+3)/2)] for q <= n; = [2^(n-(p+q+1)/2)] for q = n+1,n+2, and p <> n-1; = 1 for p = n-1 and q = n+2. WFL