222112
domain: N
Appears in sequences
- Numbers for which the sum of reciprocals of square of digits is an integer.at n=24A182452
- Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.at n=6A196714
- Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.at n=3A196717
- T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.at n=48A196718
- T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.at n=51A196718
- Good's example of a "Standard List" of prime words over the alphabet {1,2}.at n=19A212659
- Orbit of word "2" under De Mol's 5-shift tag system over the alphabet {1,2} defined in the Comments.at n=4A293945
- a(n) = (a(n-1)*a(n-2)*a(n-3)+64)/(4*a(n-4)) with a(0) = a(2) = a(3) = 2 and a(1) = 16.at n=10A362884