28075

Appears in sequences

• Graham-Sloane-type lower bound on the size of a ternary (n,3,4) constant-weight code.at n=42A030504
• Largest integer terms forming a self-convolution square-root of a sequence A132831 such that: A132831(n) <= 2*A132831(n-1) for n>0 with A132831(0)=1.at n=18A132832
• Numbers n such that 6n and 12n are both the average of twin prime pairs.at n=36A177680
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 918", based on the 5-celled von Neumann neighborhood.at n=38A273748
• E.g.f.: Product_{k>=1} 1 / (1 - x^k)^exp(x).at n=6A346547
• T(j,k) are the numerators s in the representation R = s/t + (2*sqrt(3)/Pi)*u/v of the resistance between two nodes separated by the distance (j,k) in an infinite triangular lattice of one-ohm resistors, where T(j,k), j >= 0, 0 <= k <= floor(j/2) is an irregular triangle read by rows.at n=18A355585