40486
domain: N
Appears in sequences
- Number of n-celled polyominoes without holes, symmetric about axis 2.at n=39A056880
- a(n) = floor(a(n-2)^2/a(n-1)) + a(n-1) + a(n-2), a(0) = 0, a(1) = 1, a(2) = 1, ...at n=19A096081
- Number of permutations of length n which avoid the patterns 123 and 4312.at n=30A116699
- Row sums of irregular triangle A070168.at n=30A285098
- Multiplicative order of 5 (mod A123692(n)^2).at n=2A305332