26105

Appears in sequences

• Tetranacci numbers arising in connection with current algebras sp(2)_n.at n=14A014610
• Number of n-celled polyknights without bilateral symmetry.at n=6A030448
• Base-2 digital convolution sequence.at n=39A033639
• Numbers n such that A048767(n+1)=A048767(n).at n=26A048769
• a(n) = the smallest positive integer not yet occurring such that the number of divisors of Sum_{k=1..n} a(k) is exactly n.at n=14A175350
• a(n) = (4*n^3 + 12*n^2 - 4*n + 3)/3.at n=26A322594
• Numbers m such that abs(K(m+1) - K(m)) = 2, and both m and m+1 are squarefree (A005117), where K(m) = A002034(m) is the Kempner function.at n=14A346212
• Number of integer partitions of n whose conjugate has the same median.at n=47A363220
• Number of ways to tile a hexagonal strip made up of n equilateral triangles, using singles and triples.at n=22A365352
• Number of integer partitions of n that cannot be partitioned into a set of sets.at n=43A382078