26814

Appears in sequences

• Number of symmetric filaments (strip polyominoes) with n square cells.at n=26A002014
• Integral quotients of products of consecutive composites divided by their sums: sums (divisors).at n=38A141091
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 99", based on the 5-celled von Neumann neighborhood.at n=33A270158
• Let p = n-th prime == 7 mod 8; a(n) = sum of quadratic nonresidues mod p that are > p/2.at n=18A282042
• Expansion of Sum_{k>=0} (x^3 / (1 - k*x))^k.at n=15A360709