64780

Appears in sequences

• Octagonal pyramidal numbers: a(n) = n*(n+1)*(2*n-1)/2.at n=39A002414
• a(n) = Sum{T(n,k)}, k = 0,1,...,n, where T is the array in A026148.at n=11A026164
• Number of partitions of n with more even parts than odd parts.at n=51A108949
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.at n=3A162878
• a(n) = Floor(Fibonacci(n)^(1/Pi)).at n=74A171962
• Even octagonal pyramidal numbers (A002414).at n=19A218327
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 597", based on the 5-celled von Neumann neighborhood.at n=39A273146