23922

Appears in sequences

• Numbers n such that sigma(phi(n)) = reversal(n).at n=4A071525
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (1, 0, -1), (1, 1, 1)}.at n=9A149272
• Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=12A222542
• Number of maximal 2-independent sets in the 3-dimensional (3, 3, n) grid graph.at n=6A231887
• Sums of Pythagorean sextuples in increasing order: The sums of sets of six natural numbers which correspond to the lengths of the edges of a tetrahedron whose four faces are all different Pythagorean triangles.at n=43A248548
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood.at n=41A268275
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 206", based on the 5-celled von Neumann neighborhood.at n=42A270735
• Number of parking functions of size n avoiding the patterns 213 and 321.at n=8A362596