18726

Appears in sequences

• Positive numbers k such that k and 4*k are anagrams in base 9 (written in base 9).at n=28A023081
• Multiplicity of highest weight (or singular) vectors associated with character chi_46 of Monster module.at n=38A034434
• Numbers having four 4's in base 8.at n=21A043440
• Rhombi (in 3 different orientations) in a rhombus with 60-degree acute angles.at n=35A052153
• Numbers which have more different digits than their cubes.at n=5A061374
• Expansion of g.f. (1 - 2*x^2 - 3*x^3)/((1 - x^3)*(1 - 2*x)).at n=17A063823
• Number of subsets of {1,2,3,...,n} that sum to 0 mod 14.at n=18A068035
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (0, 1, 1), (1, -1, 0), (1, 0, 0)}.at n=8A150023
• Numbers k such that k^2 + 1 = p*q, p and q primes and |p-q| is square.at n=32A187401
• Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 5, n >= 2.at n=25A214563
• Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths incorporating each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 6, n >= 2.at n=18A214601
• Number of integer compositions of n whose leaders of weakly increasing runs are strictly increasing.at n=24A374634