79324domain: NAppears in sequencesLet M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n; then a(n) is the trace of M(n)^(-7).at n=24A114359Number of (n+2)X7 binary matrices with every 3X3 block having exactly four 1's.at n=5A181259Number of (n+2)X8 binary matrices with every 3X3 block having exactly four 1's.at n=4A181260