674890
domain: N
Appears in sequences
- Number of binary strings u of any length with property that length(u) + number of 0's in u <= n (only one of a string and its reversal are counted).at n=27A066067
- Number of nX4 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=17A298959