1228500

Appears in sequences

• Partial sums of A051836.at n=23A051923
• Integer areas of the Lucas Central triangles of integer-sided triangles.at n=26A231739
• Irregular triangle read by rows: T(n,k) = number of independent vertex subsets of size k of the graph g_n obtained by attaching two pendant edges to each vertex of the ladder graph L_n (i.e., L_n is the 2 X n grid graph; 0 <= k <= 4n+1).at n=55A235117
• a(n) is the smallest integer that has exactly n divisors from A333369.at n=37A355771
• Infinitary arithmetic numbers k whose mean infinitary divisor is an infinitary divisor of k.at n=21A361387
• Bi-unitary arithmetic numbers k whose mean bi-unitary divisor is a bi-unitary divisor of k.at n=33A361787