26272

Appears in sequences

• Definition (1): Number of n-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed.at n=20A000013
• Number of even sequences with period 2n (bisection of A000013).at n=10A000116
• sin(exp(x)-cos(x))=x+2/2!*x^2-12/4!*x^4-68/5!*x^5-208/6!*x^6...at n=8A013310
• Fibonacci sequence beginning 1, 26.at n=16A022396
• Convolution of odd numbers and primes.at n=28A023662
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 81.at n=29A031579
• Number of nonisomorphic self-complementary circulant digraphs (Cayley digraphs for the cyclic group) of order 2n-1.at n=20A049309
• Number of complementary pairs of circulant graphs on n nodes.at n=40A054929
• Numbers in A086473 corresponding to the unique product of two numbers having the unique sum of A086533.at n=30A086860
• Number of collinear point 4-tuples in an n X n X n cubical grid.at n=7A178262
• Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)=1.at n=17A212894
• The integer part of the surface area of the 4-dimensional sphere of radius n.at n=10A261791
• Numbers k such that (265*10^k - 7)/3 is prime.at n=24A266582