33855

Appears in sequences

• Row 3 of array in A047666.at n=36A047667
• a(n) = 64*n^2 - 1.at n=22A158684
• The Wiener index of the windmill graph D(6,n). The windmill graph D(m,n) is the graph obtained by taking n copies of the complete graph K_m with a vertex in common (i.e., a bouquet of n pieces of K_m graphs).at n=36A180577
• Numbers k such that tau(k+1) - tau(k) = 5, where tau(k) = the number of divisors of k (A000005).at n=23A228453
• Number of (3+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7.at n=9A252308
• Number T(n,k) of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=49A258829
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 371", based on the 5-celled von Neumann neighborhood.at n=30A281520
• a(n) = Sum_{k=1..n} (-1)^(n-k) * k^n * floor(n/k).at n=5A308313
• Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of four.at n=5A316391
• Starts of runs of 3 consecutive anti-tau numbers (A046642).at n=38A341780
• Numbers k such that A353802(k) / sigma(sigma(k)) is an integer > 1, where A353802(n) = Product_{p^e||n} sigma(sigma(p^e)).at n=20A353807
• a(n) = Sum_{k=1..n} (-1)^k*k^n*floor(n/k).at n=5A366919
• Fixed points in A376198.at n=52A376201