31169

Appears in sequences

• Engel expansion of sqrt(2).at n=13A028254
• Number of pure 2-complexes on 6 unlabeled nodes with n multiple 2-simplexes.at n=10A050911
• Counterbalanced numbers: Composite numbers k such that phi(k)/(sigma(k)-k) is an integer.at n=27A055940
• First differences of values of n for Cullen primes in A005849.at n=8A128193
• 0-sequence of reduction of (n^2) by x^2 -> x+1.at n=12A192254
• Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X 4 array.at n=10A219769
• Least positive integer k such that prime(k*n)+2 = prime(i*n)*prime(j*n) for some 0 < i < j.at n=37A257926
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 805", based on the 5-celled von Neumann neighborhood.at n=29A273604
• Number of integer partitions of n whose augmented differences are an aperiodic word.at n=39A329136
• Number of integer partitions of n that can be partitioned into a set of sets.at n=42A382077