22041

Appears in sequences

• Squares written in base 5.at n=39A001740
• Number of partitions of n such that the set of parts has an even number of elements.at n=41A092306
• Sum of proper divisors of the number of partitions of n.at n=43A139055
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0111 pattern in any orientation.at n=10A146470
• a(n) = n^2 + 731*n + 1.at n=29A180919
• a(n) is the number of 2 X 2 matrices with entries in {1, ..., n} that are not the product of two 2 X 2 positive integer matrices.at n=12A260550
• Number of series-reduced balanced rooted trees whose leaves form an integer partition of n.at n=16A320160
• a(n-5) is the number of nonempty subsets of {1,2,...,n} such that the difference of successive elements is at least 5.at n=29A330910
• G.f. satisfies A(x) = 1 + x*A(x) + x^2*A(x)^6.at n=8A364472