22464

Appears in sequences

• Values of phi(k) when phi(k) = phi(k+1).at n=26A003275
• Number of numerical semigroups of genus n; conjecturally also the number of power sum bases for symmetric functions in n variables.at n=19A007323
• Theta series of lattice Kappa_7.at n=29A015236
• a(n) = (2*n - 9)*n^2.at n=24A015243
• Theta series of 8-d 6-modular lattice G_2 tensor F_4 (or A_2 tensor D_4) with det 1296 and minimal norm 4 in powers of q^2.at n=15A028977
• Sums of distinct powers of 12.at n=24A033048
• Sums of 2 distinct powers of 12.at n=9A038492
• a(n) = A000085(n) - (1 + Sum_{j=1..n-1} A000085(j)).at n=11A067897
• Numbers whose product of exponents is equal to the sum of prime factors.at n=28A071175
• a(n) = the maximum number of lattice points touched by an origin-centered 4d-sphere with radius <= n.at n=31A071345
• Least number m such that cardinality of InvPhi(m) = prime(n).at n=32A071389
• Expansion of 1 / (1 + x^2 - x^3) in powers of x.at n=54A077961
• Expansion of 1/(1+x^2+x^3).at n=54A077962
• A Chebyshev transform of A090400 related to the knot 8_2.at n=13A099845
• Numbers of the form (12^i)*(13^j), with i, j >= 0.at n=11A108771
• Large-number statistic from the enumeration of domino tilings of a 5-pillow of order n.at n=13A112837
• Triangle read by rows: numbers of isomers of unbranched a-4-catapolynonagons.at n=39A120650
• Unbranched a-4-catapolynonagons (see Brunvoll reference for precise definition).at n=5A121126
• Exponential aspiring numbers.at n=38A127658
• Records in A000118.at n=36A128690