89425

Appears in sequences

• a(n) = (n+1)*(2*n+1)*(3*n+1).at n=24A011199
• Numbers with exactly one arithmetic progression of four successive divisors (not necessarily consecutive).at n=37A094530
• Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n}, having exactly k blocks consisting only even entries (0<=k<=floor(n/2)).at n=46A124422
• a(n) = 73*n^2.at n=35A174334
• a(n) = 2*n^3 + 3*n^2.at n=35A275709
• Nonsquarefree numbers n = p_1^s_1...p_m^s_m (m > 1) such that (p_i^s_i - 1) | n-1 for all 0 < i <= m.at n=4A292815
• Number of minimal total dominating sets in the n-barbell graph.at n=24A302650
• Numbers that have exactly 7 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3.at n=15A321157
• Abelian orders m for which there exist at least 4 groups of order m.at n=34A350323
• a(n) = (6*n + 1)*(12*n + 1)*(18*n + 1).at n=4A382809
• Array read by ascending antidiagonals: A(n,k) = (6*n + 1)*(12*n + 1)*Product_{i=0..k-2} (9*2^i*n + 1) with k >= 2.at n=16A382835