72347

Appears in sequences

• Interprimes which are of the form s*prime, s=11.at n=31A075286
• Numbers x = concat(a,b) such that a^b ends with the digits of x.at n=5A273383
• a(n) is the smallest number which can be represented as the sum of three distinct nonzero n-gonal numbers in exactly n ways, or -1 if no such number exists.at n=10A374273