54018522

Appears in sequences

• a(n) = a(n-1) + a(n-2) - 1 for n > 1, a(0)=3, a(1)=2.at n=37A001612
• Number of restricted circular combinations.at n=35A006499
• Number of cyclic binary n-bit strings with no alternating substring of length > 2.at n=36A007039
• a(n) = floor(tau^n) + 1, where tau = (1 + sqrt(5))/2.at n=37A062724
• a(n) = Lucas(n+1) + (3*(-1)^n - 1)/2.at n=36A074392
• Product of Lucas numbers and inverted Lucas numbers: a(n)=A000032(n)*A075193(n).at n=18A075269
• a(n) = Lucas(4*n+1) + 1, or Lucas(2*n)*Lucas(2*n+1).at n=9A081014
• a(n) = Fibonacci(n-1) + Fibonacci(n+1) - (-1)^n.at n=37A098600
• Inverse Moebius transform of Lucas numbers (A000032) 1,3,4,7,11,..at n=36A100107
• a(n) = a(n-1) + a(n-2) + (-1)^n, with a(0)=0 and a(1)=1.at n=38A181716
• Partial sums of A005248.at n=18A188378
• a(n) = L(n)*L(n+1), where L = A000032 (Lucas numbers).at n=18A215602
• Sum of positive divisors of A000032(n).at n=37A272439
• Sum of odd divisors of Lucas(n).at n=36A280108
• Number of maximal independent vertex sets (and minimal vertex covers) in the n-Moebius ladder graph.at n=34A290608
• Number of odd chordless cycles in the (2n+1)-prism graph.at n=17A301774
• Number of odd chordless cycles in the (2n+1)-web graph.at n=17A301775