(R.E.C)     

On-line Encyclopedia of Integer Sequences ― On-line Encyclopedia of Integer Sequences (https://oeis.org), cf. The Beautiful Book of Maths, Clifford A. Pickover, DUNOD, p.494 ― established the sequence or serie or suite based on multiples of 12 under the code A000049 Fig.A.

1° This sequence or serie or suite includes numbers 768, 1536, 3072, 6144, ... which also happen to be also the PARTHENON STYLOBATE numbers of the fifth century or Pericles Age, who asked Phidias to supervise the works,
Fig.B.
2° This sequence or serie or suite later can especially be found, repeatedly, insistently, consistently, with 5 palindrome numbers : Ia/b, IIa/b, IIIa/b, IVa/b, Va/b ― Fig.A ― resulting from a general matrix established by Mr. ETIENNE Alex Luce as per

Fig.C.

Suite...