45033

Appears in sequences

• a(n) = n*(n+1)*(3*n^2+n-1)/6.at n=17A103220
• Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...).at n=32A203246
• A double binomial sum.at n=8A249062
• 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=36A273028
• Nonprime numbers k whose arithmetic derivative k' (A003415) is a Fibonacci number (A000045).at n=41A362141