234255

Appears in sequences

• Positive numbers which are one less than a perfect square that is also another power.at n=28A062965
• Composite numbers k such that (k+1)*sigma(k) is a perfect square.at n=26A073586
• a(n) = n^4 - 1.at n=21A123865
• n^4 - 1 divided by its largest fourth power divisor.at n=20A128251
• Bases in which 11 is a unique-period prime.at n=46A306076
• Odd numbers that are one less than the square of a perfect power.at n=14A389956