26916

Appears in sequences

• Fibonacci sequence beginning 3, 15.at n=17A022381
• Numbers which are the sum of their proper divisors containing the digit 8.at n=20A059467
• Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).at n=32A145880
• Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).at n=33A145880
• Number of (w,x,y) with all terms in {0,...,n} and the numbers w,x,y,|w-x|,|x-y|,|y-w| distinct.at n=33A213493
• a(n) = Sum_{k=1..n} C(n,k) * sigma(k)^(n-k) for n>=1.at n=6A251658
• Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=25A259003