OFFSET
1,1
COMMENTS
N2×8(r, r+2; 2, 0, 1, r) r>=2. (Siap-Aydogdu Table 1)
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..59
I. Siap and I. Aydogdu, Counting The Generator Matrices of Z_2 Z_8 Codes, arXiv preprint arXiv:1303.6985 [math.CO], 2013.
MATHEMATICA
QP = QPochhammer;
a[n_] := (16^(n+1)(2^(n+3))^n (2^(n+3)-1) QP[2^(-2-n), 2, n+1] QP[2^(-1-n), 2, 2])/((2^(n+2))^n (3 QP[2^(-1-n), 2, n+1] 2^n));
Array[a, 15] (* Jean-François Alcover, Sep 01 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 02 2013
EXTENSIONS
Terms a(4) and beyond from Lars Blomberg, Jun 14 2017
STATUS
approved