111537

Appears in sequences

• Numbers k that divide the (right) concatenation of all numbers <= k written in base 9 (most significant digit on left).at n=31A029454
• Odd numbers divisible by exactly 9 primes (counted with multiplicity).at n=9A046322
• Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^3 where w, x, y, and z are all positive integers.at n=34A057370
• Ninth column of triangle A067402.at n=3A067409
• Numbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).at n=34A073307
• a(n) = (2n + 1)*3^n.at n=8A124647
• Number of 0..n arrays x(0..4) of 5 elements with each no smaller than the sum of its previous elements modulo (n+1).at n=15A200254
• a(n) = n^degree(C(n,x))/discriminant(C(n,x)) for the minimal polynomials C(n,x) of 2*cos(Pi/n), given in A187360.at n=50A215041
• Number of (n+2) X (1+2) 0..3 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=23A253018
• a(n) = 17*3^n.at n=8A258598
• Triangle (sans apex) of coefficients of terms of the form (eM_1)^j*(eM_2)^k re construction of triangle A287768.at n=52A288842