A034235 Number of quaternary codes of length 4 with n words.

1, 1, 4, 20, 223, 3227, 77194, 2097080, 57796870, 1502295684, 36065804158, 795109767172, 16115614918786, 301341514055753, 5220182848555434, 84132279974374399

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full

Links

• Sean A. Irvine, Table of n, a(n) for n = 0..256
• H. Fripertinger, Isometry Classes of Codes
• H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.

Crossrefs

Cf. A034188-.