122461domain: NAppears in sequencesFrom a problem concerning circulant matrices and Gauss sums.at n=12A007792a(n) = (n+1)^5 - n^5.at n=12A022521a(0)=1, a(1)=1, a(n) = 13*a(n/2) for n=2,4,6,..., a(n) = 12*a((n-1)/2) + a((n+1)/2) for n=3,5,7,....at n=31A116524