111321

Appears in sequences

• Trajectory of 18 under iteration of the map k -> A087712(k).at n=32A077960
• Repunits concatenated with A000422, where A000422 is the concatenation of numbers from n down to 1.at n=2A078568
• n+phi(n)+phi(phi(n)) is a cube.at n=38A116042
• The function W_n(8) (see Borwein et al. reference for definition).at n=8A169712
• Number of sequences of 5 throws of an n-sided die (with faces numbered 1, 2, ..., n) in which the sum of the throws first reaches or exceeds n on the 5th throw.at n=17A264750
• Unique representation of nonnegative numbers by iterated tribonacci A, B and C sequences.at n=64A316713
• Numbers whose digit product equals the number of their digits.at n=28A321771
• Table T(n,k) read by upward antidiagonals. T(n,k) = Product_{i=1..n} Sum_{j=1..k} (i-1)*k+j.at n=33A333445
• a(n) = Sum_{d|n} sigma(d)^3.at n=34A344044
• The smallest number k whose divisors include exactly n Duffinian numbers (A003624).at n=27A373969