18826

Appears in sequences

• The array in A059216 read by antidiagonals in 'up' direction.at n=38A059217
• The array in A059216 read by antidiagonals in the direction in which it was constructed.at n=42A059234
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 782", based on the 5-celled von Neumann neighborhood.at n=41A273536
• Number of n-step self-avoiding walks on the Manhattan lattice with no non-contiguous adjacencies.at n=20A336662
• Expansion of Sum_{k>0} (1/(1 - k*x^k)^2 - 1).at n=24A362683
• Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, Sum_{k = 1..n} 1/(k*a(k)) < Sum_{k = 1..oo} 1/k^2 = Pi^2/6.at n=5A376941
• Consecutive states of the linear congruential pseudo-random number generator 172*s mod 30307 when started at s=1.at n=5A385032