29511

Appears in sequences

• a(n) = n*(3*n^2 - 1)/2.at n=27A004188
• Coefficients in a q-analog of the LambertW function, as a triangle read by rows.at n=52A152290
• Odd numbers N for which numerator(sigma(N^2)/N^2) is prime but sigma(N^2) is composite.at n=5A193072
• Truncated octahedron with faces of centered polygons.at n=13A193228
• Number of 0..n arrays of length 5 with each element differing from at least one neighbor by 1 or less.at n=23A221597
• Number of partitions of 7n into exactly 4 parts.at n=23A256329
• Sum of the sizes of the longest clique of all partitions of n.at n=29A264397
• Numbers k such that the ring of integers of Q(2^(1/k)) is not Z[2^(1/k)].at n=34A342390
• a(n) = 3*(2*n - 1)*( 3*(2*n - 1)^3 - 1) / 2 for n > 0.at n=4A355753
• a(n) is the number of integer triples (x,y,z) satisfying a system of linear inequalities and congruences specified in the comments.at n=39A370349
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=28A387159