53855

Appears in sequences

• Number of -1..1 arrays of n elements with first and second differences also in -1..1.at n=15A201081
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 569", based on the 5-celled von Neumann neighborhood.at n=36A272993
• Numbers k such that (5*10^k - 107)/3 is prime.at n=23A281641
• G.f.: Product_{k>=1} (1 + x^(3*k^2)) / (1 - x^k).at n=39A385010