453871domain: NAppears in sequencesFrom Wendt's determinant compute (A048954(2*n)/(1-4^n))^(1/2).at n=4A129205From Wendt's determinant compute sqrt(abs(A048954(n))/(2^n - 1)).at n=9A215615a(n) is the smallest number with exactly n divisors such that all its divisors end with the same digit (which is necessarily 1).at n=9A338784