1162261464

Appears in sequences

• Number of ternary sequences with primitive period n.at n=19A054718
• Number of primitive (aperiodic) palindromes using a maximum of three different symbols.at n=36A056459
• The sequence lambda(3,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly three starting and/or finishing points.at n=19A058809
• Expansion of -2*x*(-8-12*x+9*x^2) / ( (x-1)*(3*x-1)*(3*x+1)*(1+x) ).at n=18A120468
• a(n) = A000244(n) - A010684(n).at n=19A141317
• Period of the sequence of the digital roots of Fibonacci n-step numbers.at n=21A210456
• Number of ways to seat 4 types of people in n labeled seats around a circle such that no two adjacent people are of the same type.at n=19A218034
• Closed walks of length n in K_4 graph.at n=18A226493