25669

Appears in sequences

• Differences between two positive cubes in exactly 2 ways.at n=15A014440
• Difference between two positive cubes in more than one way.at n=16A034179
• Expansion of (1+2*x+3*x^2)/((1-x)^3*(1-x^2)).at n=36A055232
• Zero followed by partial sums of A059100, starting at n=1.at n=42A145068
• Polynomial expansion of p(x)=1/(1 - 3 x + 2 x^2 + 2 x^3 - 4 x^4 + 4 x^5 - 2 x^6 - 2 x^7 + 3 x^8 - x^9 - x^17 + 3 x^18 - 2 x^19 - 2 x^20 + 4 x^21 - 4 x^22 + 2 x^23 + 2 x^24 - 3 x^25 + x^26).at n=41A164787
• Truncated dodecahedron, and truncated icosahedron with faces of centered polygons.at n=9A193248
• Numbers n such that 2*n + {3, 5, 9, 11} are all primes.at n=25A222960
• Number of partitions p = [x(1), ..., x(k)], where x(1) >= x(2) >= ... >= x(k), of n such that min(x(i) - x(i-1)) is not a part of p.at n=38A241761
• Positive numbers that are the sum of two (possibly negative) cubes in at least 2 ways (primitive solutions).at n=37A293647
• Sum of two (possibly negative) coprime cubes in at least 2 ways, but not the sum of 2 noncoprime cubes.at n=20A293648
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n) + 2*n, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=16A296776
• Maximum detour index of any bipartite graph on n nodes.at n=37A296819
• Odd numbers k such that A064989(k) is in A340151.at n=35A340091
• Centered hexagonal numbers that are sphenic numbers.at n=8A382628