19008

Appears in sequences

• Values of phi(k) when phi(k) = phi(k+1).at n=24A003275
• a(n) = floor(n/4)*floor((n+1)/4)*floor((n+2)/4)*floor((n+3)/4).at n=47A008233
• Theta series of direct sum of 3 copies of hexagonal lattice.at n=23A008654
• a(n) = (2*n - 15)*n^2.at n=24A015247
• Low-temperature magnetization expansion for hexagonal lattice (Potts model, q=3).at n=24A057382
• Product of elements in the simple continued fraction for (1+1/n)^n.at n=5A071599
• Numbers n for which there are exactly ten k such that n = k + reverse(k).at n=11A072434
• Coefficients in expansion of Eisenstein series -q*E'_2.at n=21A076835
• a(n) = n^4 - n^3.at n=12A085537
• a(n) = n*(n + 1)^3.at n=11A085540
• Numbers whose set of base 12 digits is {0,B}, where B base 12 = 11 base 10.at n=8A097258
• Numbers of the form (11^i)*(12^j), with i, j >= 0.at n=13A108218
• Terms in A112039 that are divisible by 3, divided by 3.at n=29A112040
• Natural numbers that can be factored into the product of three positive integers whose minimal sum is achieved in more than one way.at n=17A112536
• Numbers n>9 such that n=Abs[(c+d_1)*(c+d_2)*...*(c+d_k)] where d_1 d_2 ... d_k is the decimal expansion of n and c is an integer constant.at n=34A113756
• a(n) = n*(n-1)*(n^3 + 21*n^2 - 4*n + 96)/120.at n=16A124161
• Exponential aspiring numbers.at n=32A127658
• Number of alternating fixed-point-free permutations on n letters.at n=10A129817
• Twice 12-gonal numbers: a(n) = 2*n*(5*n-4).at n=44A152965
• 3 times 12-gonal (or dodecagonal) numbers: a(n) = 3*n*(5*n-4).at n=36A153448