44408

Appears in sequences

• Expansion of 1/((1+x)*(1-x)^6).at n=22A001753
• a(n) = f(n,4) where f is given in A034261.at n=12A034264
• Expansion of g.f.: (1+4*x)/(1-x)^7.at n=11A051946
• Dot product of the squares and the quarter-squares: a(n) = sum(i=1..n, i^2 * floor(i^2/4)).at n=14A060453
• a(n) = (n+1)*(n+2)*(n+3)*(11*n^2 + 29*n + 20)/120.at n=12A114241
• Number of n X 5 0..1 arrays with rows unimodal and columns nondecreasing.at n=11A225007
• Let s denote the sum of the deficient numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=12A258134
• The successive remainders of the division by (a(n) + a(n+1)) of concat(a(n),a(n+1)) rebuild the sequence itself.at n=23A341037
• Expansion of (1/x) * Series_Reversion( x / (1 + x + x^3 * (1 + x)^2) ).at n=12A389131