35244

Appears in sequences

• Number of bifix-free (or primary, or unbordered) words of length n over a two-letter alphabet.at n=17A003000
• Triangle of numbers obtained from the partition array A134279.at n=23A134280
• a(n) is the smallest number k larger than a(n-1) such that n*d(k)*sopf(k)=sigma(k), where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472).at n=25A134382
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of 2 n steps taken from {(-1, 0), (1, -1), (1, 0), (1, 1)}.at n=6A151410
• a(n) = ((9 + sqrt(3))^n - (9 - sqrt(3))^n)/(2*sqrt(3)).at n=4A153600
• Molecular topological indices of the prism graphs Y_n.at n=21A192838
• Positive integers n such that the Zeckendorf (Fibonacci) representation of n^2 consists of two consecutive identical blocks.at n=9A290263
• The forgotten topological index of the Aztec diamond AZ(n) (see the Ramanes et al. reference, Theorem 2.1).at n=15A292346
• Number of length-n binary words having no nontrivial prefix that is a palindrome of odd length.at n=16A308528
• Number of even-length strict integer partitions of 2n+1.at n=39A343942
• Number of strict odd-length integer partitions of 2n + 1.at n=39A346634