27825

Appears in sequences

• Number of partitions of n of the form a_1*b_1^2 + a_2*b_2^2 + ...; number of semisimple rings with p^n elements for any prime p.at n=33A004101
• a(n) = (2*n+1)*(10*n+1).at n=37A033574
• Product of all distinct nonzero numbers that can be formed from the digits of n.at n=34A061497
• Scaled array A078740 ((3,2)-Stirling2).at n=53A090452
• Fifth column (m=6) of array A090452.at n=5A091026
• a(n) = Fibonacci(n)*(Fibonacci(n-1)^2 + Fibonacci(n+1)^2).at n=8A099014
• a(n) = phi(C(n)) / gcd(C(n)-1, phi(C(n))), where C(n) is the n-th Cullen number.at n=18A195418
• Number of dominating sets in the triangular honeycomb bishop graph.at n=4A290941
• Numbers k such that the digits of k^(1/10) begin with k.at n=5A331497
• Number of ways to write n as an ordered sum of 7 nonprime numbers.at n=31A341484