53247

Appears in sequences

• Initial number for record sum of numbers in trajectory of 3x+1 problem.at n=37A033495
• a(n) = (n+1) * 2^n - 1.at n=12A087323
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (0, 1, -1), (0, 1, 0), (1, 0, 0), (1, 1, 0)}.at n=8A151060
• a(n) = 52*n^2 - 1.at n=31A158640
• a(n) = 13*2^n-1.at n=12A198274
• Half the number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having two or four distinct clockwise edge differences.at n=5A209505
• Half the number of (n+1)X7 0..2 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=1A209509
• T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=22A209511
• T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=26A209511
• Decimal representation of the middle column of the "Rule 143" elementary cellular automaton starting with a single ON (black) cell.at n=15A267539
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 181", based on the 5-celled von Neumann neighborhood.at n=15A286406
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 187", based on the 5-celled von Neumann neighborhood.at n=30A286501
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 805", based on the 5-celled von Neumann neighborhood.at n=17A286830
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 377", based on the 5-celled von Neumann neighborhood.at n=30A287912
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood.at n=23A287978
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 422", based on the 5-celled von Neumann neighborhood.at n=48A288124
• Bases in which 13 is a unique-period prime.at n=38A306077
• a(n) = Sum_{k=1..n} floor(n/k)^k.at n=26A345176
• Irregular triangle read by rows, where the n-th row gives the number of steps in the hydra game when the initial hydra is each of the A000108(n) ordered trees with n edges (ordered by lexicographic order of their corresponding Dyck words as in A063171) and new heads are grown to the right.at n=55A372592