542361

Appears in sequences

• Triangular numbers whose digits can be rearranged to form a substring of 123456789012345678901234....at n=26A068804
• Semiperimeter of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=13A382409