56833

Appears in sequences

• Numbers k where the root mean square (RMS) of k and 7 is an integer, i.e., sqrt((k^2 + 7^2)/2) is an integer.at n=16A076293
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 597", based on the 5-celled von Neumann neighborhood.at n=7A273145
• Expansion of Product_{k>=1} ((1 + x^k) / (1 + x^(4*k)))^k.at n=23A285290
• Expansion of 1/(1 - Sum_{k>=1} k^2*x^k/(1 - x^k)).at n=9A320649
• a(n) is the number of binary (0,1) sequences of length n that have at least two ones in each window of eight consecutive symbols.at n=16A335247