29997

Appears in sequences

• Expansion of (1-x)/(1-x+x^2+x^3).at n=40A078016
• a(n) = 3*(10^n-1).at n=3A083813
• a(n) = 3*(10^n - 1).at n=4A086574
• Numbers k such that k and k^2 use only the digits 0, 2, 7, 8 and 9.at n=11A136925
• Numbers of the form 68+p^2 (where p is a prime).at n=39A138691
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 0, 1), (0, -1, 1), (1, 0, -1), (1, 1, 1)}.at n=8A149778
• Numbers which can be expressed as the product of numbers made of only threes.at n=29A161141
• 10000-gonal numbers: a(n) = n + 4999 * n * (n-1).at n=3A167149
• a(n) = a(n - 1) + a(n - 2) + a(n - 3) for n>2, a(0)=5, a(1)=7, a(2)=9.at n=15A268410
• Numbers n with the property that k*n and (k+1)*n have a common nonzero digit for all k.at n=40A308466
• a(n) = -(A(n) - A(n-1)) where A(n) = A057597(n+1), for n >= 0.at n=39A319200
• Positions of records in A351089.at n=23A349908
• a(n) = Sum_{k=0..floor(n/3)} binomial(n+k-1,k) * binomial(n-1,n-3*k).at n=11A389376