18939

Appears in sequences

• Number of subsets of { 1, ..., n } containing an A.P. of length 8.at n=19A018793
• Multiplicity of highest weight (or singular) vectors associated with character chi_111 of Monster module.at n=38A034499
• Number of n-digit bouncy numbers in which every pair of adjacent digits are distinct.at n=4A152464
• a(n) = 441*n^2 - 394*n + 88.at n=6A157734
• Principal diagonal of the convolution array A213561.at n=8A213562
• Number of n-digit positive integers that undulate.at n=4A343462
• a(n) = 6*binomial(n,4) + 6*binomial(n,3) + 4*binomial(n,2) + 2*n + 1.at n=17A385689