32648
domain: N
Appears in sequences
- a(n) = 2^n - n*(n+1)/2.at n=15A014833
- Positive numbers k such that (k+1)*(k+2)*(k+3)*(k+4)/(k+(k+1)+(k+2)+(k+3)+(k+4)) is an integer.at n=31A032795
- Composite a(n) divided by the palindromic sum of its prime factors is a palindrome (counted with multiplicity).at n=6A046361
- To find the next term, multiply the number obtained by reading the even digits in order by the number obtained by reading the odd digits in order.at n=4A122474
- Expansion of x(1-3x+5x^2-2x^3)/((1-x)^3*(1-2x)).at n=14A130104
- Total area under all peakless Motzkin paths of length n (n>=0).at n=12A171847
- The number of down-up permutations of [n] where adjacent elements differ by at least 4.at n=12A249391
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 179", based on the 5-celled von Neumann neighborhood.at n=35A270624
- Wiener index of the n X n fiveleaper graph.at n=4A292040