21764

Appears in sequences

• "EFK" (unordered, size, unlabeled) transform of 1,3,5,7,...at n=17A032304
• McKay-Thompson series of class 35B for Monster.at n=45A058641
• 8th binomial transform of (0,1,0,2,0,4,0,8,0,16,...).at n=5A081185
• McKay-Thompson series of class 35B for the Monster group with a(0) = 1.at n=45A212253
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 246", based on the 5-celled von Neumann neighborhood.at n=7A271009
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 513", based on the 5-celled von Neumann neighborhood.at n=27A272703
• 2nd term of the continued fraction for 2-sqrt(2)^^n, where x^^n denotes tetration.at n=25A280918
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=6A299847
• Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=2A299851
• T(n,k) = Number of n X k 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=38A299852
• T(n,k) = Number of n X k 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=42A299852