25929

Appears in sequences

• Fibonacci sequence beginning 2, 15.at n=17A022117
• Coordination sequence for 6-dimensional cyclotomic lattice Z[zeta_9].at n=10A126899
• Number of (n+2)X4 0..2 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.at n=1A223156
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.at n=4A223157
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood.at n=33A270893
• Expansion of Sum_{k>=0} x^(k*(k+1)) / Product_{j=1..k} (1 - x^j)^j.at n=44A306664
• a(n) = (n - 1) * Sum_{k=2..n} A000010(k).at n=43A385682