1336335
domain: N
Appears in sequences
- Number of nonempty subsets of the set of vertices of a regular n-gon in the plane such that their center of gravity is the center of the polygon.at n=38A070894
- a(n) = n^4 - 1.at n=33A123865
- n^4 - 1 divided by its largest fourth power divisor.at n=32A128251
- Product of two consecutive odd numbers k, k+2 such that (k*(k+2))+-2 are primes.at n=25A174383
- a(n) = Fibonacci(n)^4-1.at n=8A244855
- a(n) is the denominator of Sum_{k = 1..n} 1 / (k*A375781(k)).at n=6A375522
- Odd numbers that are one less than the square of a perfect power.at n=22A389956