23571

Appears in sequences

• Numbers n such that n | 5^n + 3^n +1.at n=16A057829
• Numbers n such that the sum of the digits of n^phi(n) is divisible by n.at n=26A109660
• Concatenation of the first through n-th members of A117819.at n=4A118385
• Numbers whose square starts with 4 identical digits.at n=24A132391
• a(n) = 3*a(n-1) - 3*a(n-2) + 3*a(n-3), with a(0)=1, a(1)=3, a(2)=1.at n=17A136297
• Values of y in solutions (x,y,z) to the Diophantine equation x^3-x^2+y^3-y^2=z^3-z^2, with 1<x<y<z arranged in order of increasing x.at n=21A138668
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (0, 0, 1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.at n=7A151180
• Number of nondecreasing integer sequences of length 10 with sum zero and sum of absolute values 2n.at n=16A158144
• G.f.: 1/(1 - 4*x + 5*x^2 - 100*x^3).at n=6A167418
• Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X 3 array.at n=25A219286
• Numbers k such that k![12]+2 is prime, where k![12] is the twelve-fold multifactorial.at n=37A283594
• Partial sums of A033617.at n=36A299903
• Digits of the Copeland-Erdős constant taken in groups of five digits.at n=0A304652
• Numbers whose square starts with exactly 4 identical digits.at n=23A346940
• Terms of A046337 for which A358777 is zero, where the latter is the Dirichlet inverse of former's characteristic function.at n=34A359607
• a(1) = prime(1) = 2, a(n) = 10*a(n-1) + (prime(n) mod 10).at n=4A386964