20256

Appears in sequences

• Number of partitions into non-integral powers.at n=24A000158
• Coordination sequence for 6-dimensional cubic lattice.at n=8A008414
• Powers of sqrt(17) rounded down.at n=7A017955
• Powers of fourth root of 17 rounded down.at n=14A018093
• Coordination sequence for C_6 lattice.at n=4A019562
• Number of points of L1 norm 8 in cubic lattice Z^n.at n=6A035602
• Triangle of coefficients of polynomials used for g.f.s of columns of A067304.at n=41A067329
• Smallest even number divisible by 2n which is nontotient, i.e., in A005277.at n=47A071616
• Numbers k such that (6^k)*(2^k - 1) + 1 is prime.at n=11A098864
• Square array A(n,k) read by antidiagonals: row n gives coordination sequence for lattice C_n.at n=40A103884
• Symmetric triangle, read by rows of 2*n+1 terms, similar to triangle A008301. Second term 4 times first term.at n=18A126150
• Symmetric triangle, read by rows of 2*n+1 terms, similar to triangle A008301. Second term 4 times first term.at n=22A126150
• a(n) = floor(sqrt(n^7)).at n=17A155014
• Number of n-cell fixed line-convex polycubes in 3 dimensions.at n=6A191148
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=18A192953
• Augmentation of the triangle A074909. See Comments.at n=32A193630
• Triangle by rows T(n,k), showing the number of meanders with length 5(n+1) and containing 5(k+1) L's and 5(n-k) R's, where L's and R's denote arcs of equal length and a central angle of 72 degrees which are positively or negatively oriented.at n=12A197654
• Consider a number n with m decimal digits, m>9. The sequence lists the numbers n such that the prefix of length m-1 and the suffix of length m-1 are both perfect squares.at n=34A244283
• Number of nX2 0..2 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=5A282155
• T(n,k)=Number of nXk 0..2 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=22A282159