44483

Properties

Appears in sequences

• a(1) = a(2) = 1, a(3) = 4; thereafter a(n) = a(n-1) + a(n-3).at n=27A001609
• Number of linearly ordered Girard monoids of size n; number of t-norms on an n-chain inducing an involutive residual negator.at n=15A034786
• Tribonacci analog of A055502.at n=17A113823
• List of primitive prime divisors of the numbers 4^n-3^n (A005061) in their order of occurrence.at n=30A129737
• List of quadruples of strictly non-palindromic primes without an ordinary prime in between them.at n=2A138359
• Primes containing the string 444.at n=8A166582
• Primes having only {3, 4, 8} as digits.at n=19A199348
• Primes p such that p-1 is squarefree and all prime divisors of p-1 other than 11 are also in the sequence.at n=37A267504
• Number of independent vertex sets and vertex covers in the n-antiprism graph.at n=14A286910
• Primes p such that p is the largest member of a Wieferich tuple.at n=26A297846
• Number of length n word structures with all distinct run-lengths using at most 3 symbols.at n=23A351639
• a(n) = round(c^n), where c is the supergolden ratio A092526.at n=28A382641
• Primes having only {0, 3, 4, 8} as digits.at n=39A386059
• Prime numbersat n=4622