64081

Properties

Appears in sequences

• a(n) = a(n-1) + a(n-2) - 2, a(0) = 4, a(1) = 3.at n=23A000211
• Number of maximum matchings in the n-Moebius ladder M_n.at n=23A020878
• Numerators of continued fraction convergents to sqrt(890).at n=7A042720
• Expansion of (1 - x + 3*x^3 - 2*x^4 - 3*x^5)/(1 - 2*x + x^3).at n=23A048162
• Primes of the form 2*p^2 - 1, where p is prime.at n=15A092057
• Inverse Moebius transform of A100107.at n=22A130878
• Primes of the form 648*k^2 - 72*k + 1.at n=3A154511
• a(n) = 648*n^2 - 72*n + 1.at n=9A154514
• a(n) is the number of perfect matchings of an edge-labeled 2 X (2n+1) Mobius grid graph.at n=11A162483
• Smallest prime greater than phi^n.at n=22A171969
• Primes of the form 2*p^k-1, where p is prime and k > 1.at n=26A178491
• Smallest prime >= n-th Lucas number.at n=23A218557
• a(n) = position of the first occurrence of n in A245714.at n=36A245723
• Centered 16-gonal (or hexadecagonal) primes.at n=35A264823
• Prime k with sigma(sigma(sigma(k))) < 3*k + 1.at n=22A320517
• Prime numbersat n=6421