283720

Appears in sequences

• Numbers k such that the concatenation of k with k-4 gives a square.at n=4A115432
• Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 4.at n=4A116104
• Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 2.at n=4A116121
• Total number of composite parts in all partitions of n.at n=46A326981