49970

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 2, 4, 7 and 9.at n=32A136907
• a(n+1) = A154771(a(n)) = sum of all distinct "valid substrings" of a(n); a(1)=10 (least nontrivial choice).at n=40A154770
• Number of binary strings of length n with no substrings equal to 0010 or 1100.at n=19A164405
• Fast "exotic addition" a o b = [ a[1]+b[1], a[1]*b[2]+a[2]*b[1] ].at n=38A175841
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 6 or 7 king-move adjacent elements, with upper left element zero.at n=14A305036