2098175

Appears in sequences

• Number of reversible string structures with n beads using exactly two different colors.at n=22A056326
• Number of primitive (aperiodic) reversible string structures with n beads using a maximum of two different colors.at n=22A056331
• Number of primitive (aperiodic) reversible string structures with n beads using exactly two different colors.at n=22A056336
• Numbers having in binary representation a leading 1 followed by n zeros and n-1 ones.at n=10A092431
• a(n) = 6*a(n-1) - 8*a(n-2)-3 for n > 1; a(0) = 35, a(1) = 135.at n=8A171473
• Number of bicolored cyclic patterns n X n.at n=21A187767
• a(n) = (2^n - (-1+i)^n - (-1-i)^n)/4 - 1 where i is the imaginary unit.at n=22A275016
• Triangle read by rows, expansion of e.g.f. exp(x*(cos(z) + cosh(z) - 2)/2), nonzero coefficients of z.at n=23A291452
• First term of n-th difference sequence of (round(k*phi)), phi = golden ratio = (1+sqrt(5))/2, k >= 0.at n=24A325844