104099

Appears in sequences

• Central coefficients of q in the q-analog of the odd double factorials: a(n) = [q^(n(n-1)/2)] Product_{j=1..n} (1-q^(2j-1))/(1-q).at n=8A128081
• Sum of digits (bits) in base two representation of 3^(2^n).at n=17A162599