26248

Appears in sequences

• Numbers that are the sum of 8 nonzero 8th powers.at n=30A003386
• Alkane (or paraffin) numbers l(7,n).at n=31A005994
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 81.at n=28A031579
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 81.at n=1A031759
• Coordination sequence for lattice D*_4 (with edges defined by l_1 norm = 1).at n=17A035471
• Base-9 palindromes that start with 4.at n=20A043031
• Numbers k that divide 6^k + 2^k.at n=28A045579
• a(n) = n*(n-1)*(2*n^2 + 1)/6.at n=17A071245
• Modulo 2 binomial transform of 3^n.at n=9A100307
• A recursive triangular sequence with row sums (5^(n - 1)*(n + 3)!)/12: A(n,k)= A(n - 1, k - 1) + A(n - 1, k) + 5 *(2 + n) (13 + 5* n)*A(n - 2, k - 1).at n=7A153811
• A recursive triangular sequence with row sums (5^(n - 1)*(n + 3)!)/12: A(n,k)= A(n - 1, k - 1) + A(n - 1, k) + 5 *(2 + n) (13 + 5* n)*A(n - 2, k - 1).at n=8A153811
• Primitive numbers n such that 1/n is in the Cantor set.at n=30A173793
• Irregular triangle in which row n has primitive numbers k such that 1/k is in the Cantor set and the fraction 1/k has period n.at n=37A173800
• Number of -n..n arrays x(0..3) of 4 elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).at n=24A199911
• Number of (n+1) X 2 0..1 arrays with the number of clockwise edge increases in every 2 X 2 subblock the same.at n=7A205248
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same.at n=28A205255
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same.at n=35A205255
• Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=18A259003
• Palindromic numbers in bases 3 and 9 written in base 10.at n=51A259386
• Number of n-element subsets of [n+4] having an even sum.at n=31A282080