34139

Appears in sequences

• Concatenate n with n-th prime.at n=33A045532
• Triangle T(n,k) is the number of restricted growth strings (RGS) of set partitions of {1..n} that have a decrease at index k (1<=k<n).at n=39A056862
• Number of lower triangles of a 3 X 3 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less.at n=33A195249
• Number of zero-sum -n..n arrays of 4 elements with adjacent element differences also in -n..n.at n=25A202254
• Number of partitions of n into an odd number of parts that are not multiples of 4.at n=52A339407
• a(n) = number of pairs {x,y} with (x,y > 1) such that x^y (= terms of A072103) has bit length <= n.at n=29A365931