19152
domain: N
Appears in sequences
- Smallest k such that sigma(x) = k has exactly n solutions.at n=40A007368
- a(n) is the concatenation of n and 8n.at n=18A009470
- Low temperature series for spin-1/2 Ising magnetic susceptibility on 4D simple cubic lattice (divided by 4).at n=15A030046
- a(n) = C(n+3,4) + 3*C(n+1,3) + 5*C(n-1,2) + 7*n - 15.at n=20A034858
- a(n) = C(n+3,4) + 3*C(n+1,3) + 5*C(n-1,2) + 7*n - 15 for n >= 3; a(1)=1, a(2)=10.at n=21A034859
- One eighth of deca-factorial numbers.at n=3A035277
- For all n, if d is recursively applied to a(n) exactly 6 times then the fixed point of d-iteration is just reached.at n=29A036458
- Numerators of continued fraction convergents to sqrt(694).at n=8A042334
- Jordan function J_3(n).at n=27A059376
- Smallest numbers such that the number of terms in inverse set usigma equals n; where usigma = A034448.at n=30A063975
- a(n) can be expressed as the difference of the squares of consecutive primes in just three distinct ways.at n=4A090783
- Numbers that can be expressed as the difference of the squares of primes in exactly six distinct ways.at n=15A092002
- Triangle, read by rows, of trinomial coefficients arranged so that there are n+1 terms in row n by setting T(n,k) equal to the coefficient of z^k in (2 + 3*z + z^2)^(n-[k/2]), for n>=k>=0, where [k/2] is the integer floor of k/2.at n=39A099527
- Integers that are Rhonda numbers to base 15.at n=6A100974
- 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=18A112536
- Number of partitions of n in which each even part has odd multiplicity.at n=40A130126
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=9A148861
- a(n) = 729*n - 531.at n=26A156771
- Triangle read by rows generated from A007249, the convolution square root of A007191.at n=26A161196
- Triangle read by rows generated from A007249, the convolution square root of A007191.at n=22A161196