26450

Appears in sequences

• Fibonacci sequence beginning 2 9.at n=18A022114
• Fifth column (m=4) of (1,6)-Pascal triangle A096956.at n=22A096958
• Numbers k such that sigma(k) - phi(k) is a brilliant number (A078972).at n=16A115917
• Number of 1's in all partitions of n with no even parts repeated.at n=35A117276
• Expansion of (4 + 15*x - 35*x^2 + 20*x^3 - 2*x^5)/(1 - x)^5.at n=19A257600
• a(n) = (n^4 + 20*n^3 + 125*n^2 + 250*n + 24)/12.at n=19A257601
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood.at n=34A271596
• Number of integer partitions of n such that, for all parts x, x - 1 or x + 1 is also a part.at n=53A355394