46501
domain: N
Appears in sequences
- Base-9 palindromes that start with 7.at n=27A043034
- Number of n X n binary arrays with all ones connected only in a 111-110-111 pattern in any orientation.at n=7A146280
- Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 111-110-111 pattern in any orientation.at n=17A146282
- Triangle read by rows: numerator of h(n-k)*h(k)/h(n) where h(x) = zeta(2*x)*(4^x-2), 0<=k<=n.at n=30A246051
- Triangle read by rows: numerator of h(n-k)*h(k)/h(n) where h(x) = zeta(2*x)*(4^x-2), 0<=k<=n.at n=33A246051
- E.g.f.: C(x) = Sum_{n>=0} cosh((2*n+1)*x) * x^n / (1 + x^(2*n+1)).at n=6A257214
- Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 459", based on the 5-celled von Neumann neighborhood.at n=7A272288