18618

Appears in sequences

• Indices m such that A128646(m)-1 is prime, where A128646 = denominator of partial sums of 1/(p(i)-1).at n=42A137689
• Number of n X 4 0..1 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing.at n=9A223766
• Total number of inversions in all partitions of n.at n=22A271370
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood.at n=35A272014
• Numbers n whose sum of divisors equals the sum of divisors of 2n+1.at n=11A272553
• Numbers n such that usigma(n) = usigma(2*n+1) where usigma(n) = A034448(n).at n=3A286837
• Number T(n,k) of proper k-times partitions of n; triangle T(n,k), n >= 0, 0 <= k <= max(0,n-1), read by rows.at n=43A327639
• Number of partitions p of n such that (1/5)*max(p) is a part of p.at n=48A363068
• Numbers k whose binary expansion contains 2 adjacent 1's and A391571(k) = k.at n=39A391581