67984

Appears in sequences

• a(n) = Sum_{k=0..floor(n/5)} C(n-4k,k+1).at n=38A099559
• Number of 3 X n 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=16A224147
• Numbers n such that numerator(sigma(n)/n) = reverse(denominator(sigma(n)/n)).at n=4A259398
• Triangle read by rows: T(n, k) = Sum_{j=0..n} C(-j-1, -n-1)*L(j, k), L the unsigned Lah numbers A271703, for n >= 0 and 0 <= k <= n.at n=39A271706
• Positive integers k having no duplicated digit such that concatenating all successive absolute differences between two successive digits of k produces a divisor of k.at n=95A338641