221778domain: NAppears in sequencesNumber of binary codes of length 7 with n words.at n=7A034192Number of binary codes (not necessarily linear) of length n with 7 words.at n=6A034202a(n) = 18*((10^n - 1)/9)^2.at n=2A178630The triangle in A039754 but with rows truncated at k = n.at n=34A276777