23759

Appears in sequences

• Array read by antidiagonals: T(k,d) = number of different hyperplanes in d-space with integer coefficients in set {-k,...,-1,0,1,...,k}.at n=38A061559
• Composite k such that (k+1) * Sum_{d|k} d/sigma(d) is an integer.at n=13A068975
• Frobenius number of the numerical semigroup generated by 3 consecutive triangular numbers.at n=29A069755
• Positive integers i for which A112049(i) == 8.at n=27A112068
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=-1 and l=1.at n=14A176959
• Logarithmic derivative of the Bell numbers (A000110).at n=7A205543
• Numbers k such that 2*k + 1 divides 2^(k+1) - 1.at n=17A246648
• E.g.f.: exp((1-x)*(1-x^2)*(1-x^3)*(1-x^4) - 1).at n=9A294257
• Number of compositions of n whose differences of all degrees > 1 are nonzero.at n=18A325875