21854

Appears in sequences

• Numbers n such that 147*2^n-1 is prime.at n=31A050599
• Number of rooted trees with n nodes and 5 leaves.at n=10A055280
• Triangle T(n,k), n >= 1, giving number of prime unoriented alternating links with n crossings and k components.at n=45A059739
• Prime unoriented alternating links with n crossings and 2 components.at n=13A059741
• Expansion of (1-x)^(-1)/(1-x+x^2-2*x^3).at n=31A077871
• Intersection of A108027, A108028, A108029 and A108030.at n=11A108109
• Floor-Sqrt transform of Catalan numbers (A000108).at n=18A186546
• First row of spectral array W(gamma^2+1).at n=14A250254
• Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.at n=3A255019
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.at n=3A255023
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.at n=24A255027
• a(n) = (n^4 + 2*n^3 - n^2)/2.at n=14A255499
• Total number of partitions of all hypercubes resulting from a sequence of n bisections, each of which splits any part perpendicular to any of the axes, such that each dimension is used at least once.at n=5A258425
• 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 185", based on the 5-celled von Neumann neighborhood.at n=17A279700
• Number of (unlabeled) rooted trees with n leaf nodes and without unary nodes or outdegrees larger than seven.at n=12A292213