68916

Appears in sequences

• a(n) = floor( n*(n-1)*(n-2)*(n-3)/23 ).at n=37A011933
• Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + (j+1)*prime(j)*T(n-2, k-1) with j=4, read by rows.at n=38A153649
• Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + (j+1)*prime(j)*T(n-2, k-1) with j=4, read by rows.at n=42A153649
• Least k such that Sum_{i=n..k} 1/i >= n.at n=8A168214
• Preperiod (or threshold) of orbit of Watanabe's 3-shift tag system {00/1011} applied to the word (100)^n.at n=39A292090
• Number of cycles in the n-dipyramidal graph.at n=21A307621