86478

Appears in sequences

• Numbers k such that k^2 contains only digits {4,7,8}.at n=4A053962
• Numbers k such that k and k^2 use only the digits 0, 4, 6, 7 and 8.at n=19A136954
• Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 8.at n=18A137052
• Numbers k such that k and k^2 use only the digits 2, 4, 6, 7 and 8.at n=31A137101
• Numbers k such that k and k^2 use only the digits 3, 4, 6, 7 and 8.at n=9A137127
• Numbers k such that k and k^2 use only the digits 4, 5, 6, 7 and 8.at n=23A137140
• Numbers k such that k and k^2 use only the digits 4, 6, 7 and 8.at n=4A137144
• Numbers k such that k and k^2 use only the digits 4, 6, 7, 8 and 9.at n=14A137145
• a(n) = 196*n^2 + 2*n.at n=20A158222
• a(n) = 49*n^2 + n.at n=41A173141
• Numbers n such that the decimal expansions of both n and n^2 have 4 as the digit with the smallest value and 8 as the digit with the largest value.at n=7A254071
• Number of (n+2)X(2+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001011.at n=11A260495
• Least m>0 for which m*n^2 + 1 is a square and m*triangular(n) + 1 is a triangular number (A000217). Or -1 if no such m exists.at n=14A267077
• Numbers k such that 3*10^k + 89 is prime.at n=24A276642