41520

Appears in sequences

• Number of squares (of another matrix) in M_2(n) - the ring of 2 X 2 matrices over Z_n.at n=27A068197
• Sums of the products of n consecutive quadruples of numbers.at n=3A135038
• Averages of twin prime pairs that are sums of 4 consecutive averages of twin prime pairs.at n=24A160918
• List of fixed points of the base-9 Kaprekar map A165110.at n=1A165114
• Consider the base-9 Kaprekar map n->K(n) defined in A165110. Sequence gives numbers belonging to cycles, including fixed points.at n=13A165115
• Consider the base-9 Kaprekar map n->K(n) defined in A165110. Sequence gives least elements of each cycle, including fixed points.at n=6A165119
• Smallest member of cycle corresponding to n-th term of A165127.at n=6A165128
• Number of (n+1)X(n+1) symmetric binary matrices without the pattern 1 1 diagonally or antidiagonally.at n=5A190341
• Smallest number k such that prime(n) divides the n-th divisor of k.at n=38A226101
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 579", based on the 5-celled von Neumann neighborhood.at n=35A273028
• Smallest fixed points (>0) of the base-n Kaprekar map.at n=7A319798