60138

Appears in sequences

• Numbers whose base-3 and base-4 expansions have no digits in common.at n=15A037345
• a(n) = A000094(n+4) - A006918(n).at n=39A084835
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=12A208283
• a(n) = Sum_{k=1..n} (k^2*floor(k/2)).at n=25A285188