20866

Appears in sequences

• Ordered sequence of distinct terms of the form floor(exp(i) * floor(exp(j))), i,j >= 0.at n=46A022765
• Numbers k that divide the (right) concatenation of all numbers <= k written in base 2 (most significant digit on left).at n=45A029447
• Expansion of (2+2*x)/(1-8*x-25*x^2).at n=4A155542
• Apply partial sum operator twice to sequence of squares of the first n primes.at n=12A157492
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15 and 32*k-31 are also products of two distinct primes.at n=28A177214
• Number of compositions of n into distinct parts with exactly one descent.at n=34A241720
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 214", based on the 5-celled von Neumann neighborhood.at n=38A270907
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=10A318541
• Number of admissible mesa sets among Stirling permutations of order n.at n=15A363582