25476

Appears in sequences

• Trajectory of 1 under map n->25n+1 if n odd, n->n/2 if n even.at n=8A033969
• Number of pairs of orientable necklaces with n beads and two colors; i.e., turning the necklace over does not leave it unchanged.at n=20A059076
• a(n) = Sum_{k=0..n} (-1)^(n-k)*(n!/k!)^2*binomial(n,k).at n=5A119401
• a(n) = 4*3^n - 3*2^n.at n=8A166060
• A boustrophedon triangle.at n=49A227862
• Number of (n+2) X (1+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=33A253503
• Coefficients of mock modular form H_2^(7) of type 1A, divided by 4.at n=33A256057
• a(n) = 6*n*(9*n-5).at n=22A277984
• a(n) = [x^n] 1/(1 - Sum_{k>=1} k^n*x^k/(1 - x^k)).at n=5A321190
• The smallest number in base n such that two digits (and no fewer) need to be changed to get a prime.at n=42A370531
• Numbers whose binary expansion consists of alternating runs of 1's and 0's where each run of 0's is exactly one longer than the preceding run of 1's, and the expansion ends with a 0-run.at n=43A387269