300006

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 2, 3, 6 and 9.at n=31A136894
• Numbers k such that k and k^2 use only the digits 0, 3, 4, 6 and 9.at n=37A136932
• Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 9.at n=29A136939
• Numbers k such that k and k^2 use only the digits 0, 3, 6, 7 and 9.at n=30A136944
• Numbers k such that k and k^2 use only the digits 0, 3, 6, 8 and 9.at n=55A136945
• Numbers k such that k and k^2 use only the digits 0, 3, 6 and 9.at n=28A136946
• Number of (w,x,y,z) with all terms in {1,...,n} and w+x<y+z.at n=28A212523
• Number of (7+1)X(n+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.at n=19A253704