146880

Appears in sequences

• Theta series of extremal even unimodular lattice in dimension 32.at n=2A004670
• a(n) = (2^n + 2) a(n-1) (kissing number of Barnes-Wall lattice in dimension 2^n).at n=5A006088
• Value of phi in arithmetic progression of at least 5 terms having the same value of phi in A050515.at n=1A050517
• Stable Poincaré series [or Poincare series] for Lie algebra of type A (i.e., the variety of complex k X k matrices with distinct eigenvalues).at n=26A098787
• Numbers such that UnitaryPhi(2*UnitaryPhi(n)) = n.at n=11A117820
• 10-gonal numbers for which the sum of the digits is also a 10-gonal number.at n=25A119547
• a(1)=1; for n>1: a(n) = sum of all subsets of (a(1),..,a(n-1)).at n=6A126391
• a(n) = v(n+1)/v(n), where v = A203477.at n=3A203478
• a(n) = Product_{d|n} T(d) where T(x) = x*(x+1)/2 = A000217(x) = x-th triangular number.at n=15A275786
• A multiplicative encoding for the exponents of 2 obtained when using Shevelev's algorithm for computing A002326.at n=34A292239
• Triangle T(n,k) read by rows: connected topologies of the effective potential in Goldstone diagrams with n interactions and k external potentials.at n=24A328924
• a(n) is the product of the distinct positive numbers whose binary digits appear in order, but not necessarily as consecutive digits, in the binary representation of n.at n=17A332030
• Triangle read by rows, coefficients of polynomials in Pi^2, given by trigonometric double integrals over the unit square.at n=13A336239
• Expansion of e.g.f. 1/(1 + x^2/2 * log(1 - x)).at n=9A351505
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 + x^k/k! * log(1 - x)).at n=75A355652
• Numbers m such that A357761(m) < A357761(k) for all k < m.at n=21A357764
• Integers k with at least one proper factorization for which the sum of the same fixed integer power >= 2 of the factors equals k.at n=29A380760