1915456
domain: N
Appears in sequences
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite STI = Stilbite Na4Ca8[Al20Si52O144].56H2O starting with a T4 atom.at n=18A019239
- Bishops on a 2n+1 X 2n+1 board (see Robinson paper for details).at n=12A123071
- Number of n X 8 binary arrays without the pattern 0 1 diagonally or antidiagonally.at n=22A188823
- Expansion of e.g.f.: exp(4*x/(1-2*x)) / sqrt(1-4*x^2).at n=6A202828
- Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.at n=7A258539