28360

Appears in sequences

• Fixed points of permutation A071661/A071662.at n=40A126312
• Numbers of unstrained alkane staggered conformers (acyclic). See Table 4 of Cyvin et al. reference for precise definition.at n=11A126879
• a(1) = 1; for n >= 1, a(n+1) is obtained by adding to a(n) the a(n)-th smallest number not dividing a(n).at n=13A140481
• Number of 3-step one or two space at a time bishop's tours on an n X n board summed over all starting positions.at n=24A187047
• Number of binary sequences of length n with curling number 2.at n=15A217211
• a(n) = (3!)^3 * [z^3] hypergeom([], [1,1], z)^n.at n=10A287702
• Number of ascent sequences of length n with alternating ascents and descents (unaffected by level steps).at n=11A294281
• Sum of all the parts in the partitions of n into 10 squarefree parts.at n=40A326627
• Number of multisets of nonempty strict integer partitions with a total of 2n parts and total sum of 3n.at n=15A360785
• Numbers X such that X^2 + Y^2 = 2^(2*k) + 1 and X > Y > 0 and k is the binary digit length of X-1.at n=48A369703
• Euler transform of A373216.at n=36A373297
• Centered triangular numbers that are pseudoperfect (semiperfect).at n=9A377747