43818

Appears in sequences

• Numbers with no 1's in their base-3, base-4, and base-5 expansions. Intersection of A005823, A023709, and A023725.at n=15A117482
• Number of 0..n arrays x(0..3) of 4 elements with nondecreasing average value.at n=22A200764
• Number of 2 X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.at n=23A265992
• a(n) = 36*n^2 - 8*n - 2 (n >=1).at n=34A304834
• a(n) = 6*a(n-1) - 7*a(n-2) - 2*a(n-3) for n >= 3, with a(0) = a(1) = 0, a(2) = 1.at n=9A345031
• a(n) = number of subsets S of {1,2,...,n} having more than 1 element such that (difference between least two elements of S) = difference between greatest two elements of S.at n=17A357282
• a(n) = Sum_{k=3..n} binomial(k,3) * floor(n/k).at n=31A366971