29155

Appears in sequences

• a(n) = 49*(n-1)*(n-2)/2.at n=33A027469
• Number of partitions of n into a prime number of parts.at n=45A038499
• a(n) = binomial(n+1,2)*7^2.at n=34A162942
• Numbers n such that phi(n)=2*phi(n-1).at n=26A171271
• Number of n-digit 9th powers.at n=45A216659
• Triangle read by rows: row n gives coefficients of expansion of Product_{k = 1..n-1} ((n + 1)*x + k), starting with lowest power.at n=18A220883
• 3d-congruent numbers: positive integers n for which there exists a trirectangular tetrahedron having volume n and rational areas and sides.at n=37A297207
• Irregular triangle read by rows, arising from Garvan's proof of Watson's generalization of Ramanujan's partition congruences for powers of 7.at n=8A330329
• a(n) = floor(2^n/(-1 + cot(1/n))).at n=18A332431
• Triangle read by rows: T(n,w) is the number of n-step self avoiding walks on a 3D cubic lattice confined between two infinite horizontal planes a distance 2w apart and an orthogonal plane on the y-z axes, where the walk starts at the middle point between the planes on the y-z plane.at n=22A338127
• Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = -2.at n=3A380900
• Expansion of 1/(1 - 49*x)^(3/7).at n=3A386272