20527

Appears in sequences

• Powers of cube root of 15 rounded down.at n=11A018018
• Powers of cube root of 15 rounded to nearest integer.at n=11A018019
• a(n) = (d(n)-r(n))/2, where d = A026049 and r is the periodic sequence with fundamental period (1,0,0,1).at n=45A026050
• Number of primes between n^4 and (n+1)^4.at n=42A061235
• Interprimes (A024675) which are of the form s*prime, s=13.at n=11A075288
• Number of arrangements of n+2 numbers in 0..5 with each number being the sum mod 6 of two others.at n=3A183880
• T(n,k)=Number of arrangements of n+2 numbers in 0..k with each number being the sum mod (k+1) of two others.at n=31A183884
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 398", based on the 5-celled von Neumann neighborhood.at n=42A271695
• a(n) is the number of vertices in the diagram of partitions of n (see example).at n=31A299475
• Number of compositions (ordered partitions) of n into distinct parts such that number of parts is odd.at n=30A332304
• Number of subsets of {1..n} whose elements have the same number of divisors.at n=40A339514
• The smallest number k such that k! contains the string concatenation of 0 to n as a substring.at n=8A385673