18725

Appears in sequences

• Numbers having four 4's in base 8.at n=20A043440
• Numbers whose base-5 representation contains exactly three 0's and three 4's.at n=19A045217
• Number of cubic residues mod 2^n.at n=15A046630
• Number of cubic residues mod 8^n.at n=5A046636
• One-sixtieth of the even leg of Pythagorean triangles whose other sides are both primes (other than 3, 5 or 13).at n=43A068485
• a(n) = Sum_{d|n} phi(d^3).at n=31A068963
• Expansion of 1/(1 - x - x^2 - 2*x^3).at n=15A077947
• a(n) = a(n-3) + 2^(n-4) with a(1) = 1, a(2) = 2, a(3) = 1.at n=17A166578
• a(n) = a(n-1) + a(n-2) + 2*a(n-3) with a(0)=2, a(1)=1, a(2)=5.at n=14A226308
• Number of partitions of n such that the multiplicity of the number of parts is a part.at n=50A240499
• Number of partitions p of n such that floor(mean(p)) is a part and ceiling(mean(p)) is not.at n=44A241342
• Number of (n+1) X (1+1) 0..2 arrays with each row and column divisible by 7, read as a base-3 number with top and left being the most significant digits.at n=15A263366
• Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.at n=1A264242
• T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.at n=22A264244
• Number of (2+1) X (n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.at n=5A264246
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 926", based on the 5-celled von Neumann neighborhood.at n=31A290678
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 926", based on the 5-celled von Neumann neighborhood.at n=33A290678
• a(n) = 1 + Sum_{d|n, d > 1} d^2*a(n/d).at n=31A307607
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=5A320405
• Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=3A320407