24286

Appears in sequences

• n! has a palindromic prime number of digits.at n=34A035067
• Starting positions of strings of 3 0's in the decimal expansion of Pi.at n=21A050202
• Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-6).at n=27A114358
• a(n) = smallest index m such that smallest prime factor of m-th triangular number is prime(n).at n=34A226442
• Those terms of A255571 whose every A080541/A080542-rotation is also a term of A255571.at n=48A258001
• Capped binary boundary codes for holeless strictly non-overlapping polyhexes (all orientations and rotations included).at n=18A258002
• Capped binary boundary codes for fusenes (all orientations and rotations included).at n=18A258012
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 33", based on the 5-celled von Neumann neighborhood.at n=34A269812
• Number of all self-avoiding planar walks of length j (0<=j<=n) starting at (0,0), ending at (n-j,0), remaining in the first quadrant and using steps (0,1), (1,0), (1,1), (-1,1), and (1,-1) with the restriction that (0,1) is never used below the diagonal and (1,0) is never used above the diagonal.at n=21A284428
• The indices where A354606(n) = 1.at n=36A355606
• a(n) = number of pairs {x,y} with (x,y > 1) such that x^y (= terms of A072103) has bit length <= n.at n=28A365931