A164575

Petoukhov matrices generated from (7,2), at A164575, in OEIS; http://www.tinyurl.com/4zq4q

A147995

Gray code conversion rules along with DNA codons mapped on a Gray code format, at
A147995, in OEIS, http://www.tinyurl.com/4zq4q

Gray Code conversion rules to Binary, any base

Gray code conversion rules, any base (and back); may be found in OEIS, http://www.tinyurl.com/4zq4q
then enter into the field, sequence A147995, end of the entry

Petoukhov matrices

Petoukhov matrices are 2^n x 2^n matrices whose square roots are irrational terms. A simple
case would be Q =
3, 2
2, 3,
.
then sqrt Q =
phi, 1/phi,
1/phi, phi

The rules for constructing Petoukhov matrices may be found at OEIS, http://www.tinyurl.com/4zq4q
then enter into the field, sequences: A147995, A164575, A164557, A164092, A164522, A164516, A164309, A164057, A164308, A164281 and A164279