331775
domain: N
Appears in sequences
- Positive numbers which are one less than a perfect square that is also another power.at n=31A062965
- a(n) = n^4 - 1.at n=23A123865
- n^4 - 1 divided by its largest fourth power divisor.at n=22A128251
- Largest k > 1 such that (sum of digits of k^n)*(sum of digits of k^(n+1)) = k, or 0 if no such k exists.at n=21A130181
- Triangular array of coefficients of polynomials q(n,k) defined in Comments.at n=49A248669
- Triangular array of coefficients of polynomials q defined in Comments; the coefficients are written in the order of decreasing powers of x.at n=50A248670
- Odd numbers that are one less than the square of a perfect power.at n=16A389956