103680000
domain: N
Appears in sequences
- Let k(n) = mod(3,n)-1. Then a(n) = 4*a(n-1) if n is odd, otherwise ((5+k(n))/4)*a(n-1), with a(0) = 1, a(1) = 2.at n=23A123761
- Let k(n) = mod(3,n)-1. Then a(n) = 4*a(n-1) if n is odd, otherwise ((5+k(n))/4)*a(n-1), with a(0) = 1, a(1) = 2.at n=24A123761
- a(n) = n^4*(n+1)^2/2.at n=24A163274
- Sorted number of edges of distinct solutions in the mix of 2 or 3 regular convex 4-polytopes.at n=31A199808
- Sorted orders of automorphism groups of distinct solutions in the mix of 2 or 3 regular convex 4-polytopes.at n=18A199811
- Number of permutations of [2n] with n parity changes.at n=6A363180