29472
domain: N
Appears in sequences
- a(0)=1; a(n) = Sum_{j<n, gcd(n,a(j)) = 1} a(j).at n=31A055935
- McKay-Thompson series of class 18h for Monster.at n=65A058546
- Numbers n such that n, n+1, n+2, n+3, n+4 are all of the form x^2+2*y^2 for nonnegative x, y.at n=18A096783
- a(n) = 2*a(n-1) + 4*a(n-2) - 6*a(n-3) - 3*a(n-4) for n > 3, with a(0)=1, a(1)=2, a(2)=4, a(3)=8.at n=13A137255
- Number of days after Mar 01 00 such that the date written in the format DD.MM.YY is palindromic.at n=24A210887
- Value of concatenation of all suffixes of binary representation of n.at n=28A241426
- T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.at n=37A269052
- Number of 2 X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.at n=7A269053
- Expansion of 1/((1 - x - x^5)^2 - 4*x^6).at n=19A375285