18659

Appears in sequences

• a(n) = 3^(n-1) - 2^n.at n=9A003063
• Numbers whose base-5 representation contains exactly three 1's and three 4's.at n=27A045262
• Expansion of (1-x)^2/((1-x)^3-2x^4).at n=16A097119
• Records in A109734.at n=17A109739
• Numbers n such that sigma(n) - phi(n) is a repdigit greater than 2.at n=43A116020
• a(n) = least k such that the remainder when 11^k is divided by k is n.at n=9A127819
• Least k such that n^k mod k = n-1.at n=8A128149
• Monotonic ordering of nonnegative differences 3^i-4^j, for 40>= i>=0, j>=0.at n=35A192147
• Constant term of the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=17A192954
• Sum of all parts minus the total numbers of parts of all partitions of n.at n=22A196087
• Least number k such that the polynomial x^n - x^(n-1) - ... - 1 (mod k) has more than n distinct zeros.at n=12A211672
• Number of n-node unlabeled rooted trees with thickening limbs and root outdegree (branching factor) 3.at n=27A245143
• Least integer N > 1 such that the number of base-n-zero containing numbers [<= N] >= the number of base-n-zerofree numbers [<= N].at n=5A306195
• Number of lucky numbers l between powers of 2, 2^n < l <= 2^(n+1).at n=18A309399
• MM-numbers of capturing, non-nesting multiset partitions (with empty parts allowed).at n=36A326260
• a(n) = digsum(2^a(n-1)) with a(0) = 0.at n=30A330822
• a(n) = 3^(n+1) + 2*(-2)^(n+1).at n=8A369490