29040

Appears in sequences

• Theta series of 10-d 11-modular Craig lattice A_10^(3).at n=13A028995
• Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*11^j.at n=23A038217
• Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*2^j.at n=25A038316
• Number of 2n-bead balanced binary strings, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=15A045659
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=15A045668
• Star of David matchstick numbers: a(n) = 6*n*(3*n+1).at n=40A045946
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= n/2.at n=20A047163
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-1)/2.at n=20A047174
• a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048201.at n=33A048209
• Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors.at n=11A053215
• Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 13 (most significant digit on right, least significant zeros not written).at n=16A061942
• Indices of primes where nondecreasing gaps occur.at n=30A085500
• Number of paths of length n between two arbitrary, distinct vertices in K7, the complete graph on 7 vertices.at n=7A108509
• Numbers with prime factorization pqr^2s^4.at n=30A190107
• Right edge of the triangle in A033291.at n=43A192736
• Molecular topological indices of the gear graphs.at n=29A192827
• Triangle of coefficients of polynomials v(n,x) jointly generated with A208930; see the Formula section.at n=51A208930
• Number of (w,x,y,z) with all terms in {1,...,n} and median<mean.at n=16A212135
• Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.at n=38A214457
• Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.at n=42A214457