What is the relation

[ketan]

any crypto transformation adds high entropy, while we can see lots of constant blocks.

Would be nice to see Authorization Codes for a X and X+1 SN.

BTW if alphabet chars order is right here are bitstreams (two usual ways):

1420249 (0x15abd9):
be813c41b7ae0dd6e6b9
57838961bb159bde72cd
1427534 (0x15c84e):
be8138a54f260dd266b9
578319937a049b4e72cd
1340639 (0x1474df):
be809a81c36e0dd766b9
578354811b0d9bee72cd
871023 (0x0d4a6f):
be805327c1260dd3e6b9
578362920f049b7e72cd
930753 (0x0e33c1):
b6c991e6ed408740e0d8
76933cf26d480c1ab0c1
959088 (0x0ea270):
ac0bca32820267eb32cc
15164e1915204d6f9965
1328702 (0x14463e):
6886c34998766b0aad0b
4d0c6624c32e5758175a
871013 (0x0d4a65):
3bc2daf73796c9c2e81a
e785567bbe72135e34d0
1038660 (0x0fd944):
3bc23cc1bc9ec9c2681a
e7859161e373134e34d0
2172325 (0x2125a5):
3773554f61744ef72669
a6e7aae60e2e9ee7d24c
1328727 (0x144657):
375da95c0a2c4ef3a669
a63b2d2f50259e77d24c
874531 (0x0d5823):
375d2b0967944ef1a669
a63b69c53a329e37d24c

[psgama]

I have these S/N / Authcode combinations which are the closest group together.

1328702/F45E 8LES GTPJ PDAD
1328727/8YGU LR2C 7K9H 9BMB
1328729/PJ74 6F5P 5BMZ CEFE

It's looking like the formula is well hidden in this instance.