77558761

Appears in sequences

• a(n) = binomial(n, floor(n/2)) + 1.at n=29A051920
• Inverse Moebius transform of A001405 (binomial(n, floor(n/2))).at n=28A062798
• Number of congruence classes (epimorphisms/vertex partitionings induced by graph endomorphisms) of undirected cycles of even length: |C(C_{2*n})|.at n=14A112849
• Alternating row sums of A257241, Stifel's version of the arithmetical triangle.at n=29A258144
• Number of set partitions of {1, 2, ..., 2*n} with sizes in {[n, n], [2n]}.at n=15A260878
• a(n) is the smallest base b such that (b+1)^n in base b is a palindrome.at n=28A367857
• a(n) is the denominator of tanh(Sum_{k=1..n-1} artanh(k/n)), where artanh is the inverse hyperbolic tangent function.at n=14A383431