79260

Appears in sequences

• a(n) is the number of integers k less than 10^n such that the decimal representation of k lacks the digits 1,2,3,4, at least one of digits 5,6 and at least one of digits 7,8,9.at n=6A126643
• Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=1A236140
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=4A236142
• Numbers k such that the concatenation in increasing order of their prime factors, with multiplicity, is congruent to 1 (mod k).at n=11A349705
• G.f. satisfies A(x) = 1 + x^4*A(x)^2 / (1 - x*A(x)).at n=25A365696