25670

Appears in sequences

• a(0)=0; then a(4*k+1)=a(4*k)+(4*k+1)^2, a(4*k+2)=a(4*k+1)+(4*k+3)^2, a(4*k+3)=a(4*k+2)+(4*k+2)^2, a(4*k+4)=a(4*k+3)+(4*k+4)^2.at n=42A115391
• INVERT transform of the rabbit sequence, A005614.at n=20A144023
• G.f.: A(x) = exp( Sum_{n>=1} sigma(n)*L(n)*x^n/n ) where Sum_{n>=1} L(n)*x^n/n = log(1+x*A(x)).at n=7A158107
• Number of 3-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=21A187858
• Number of strictly increasing arrangements of 5 nonzero numbers in -(n+3)..(n+3) with sum zero.at n=22A188124
• Number of (w,x,y) with all terms in {0,...,n} and w<x+y and x<y.at n=39A212980
• a(n) = n*(7*n^2-12*n+7)/2.at n=20A226451
• Coefficients of the minimal polynomials of the algebraic numbers sqLhat(2*l) from A230072, l >= 1, related to the square of all length in a regular (2*l)-gon inscribed in a circle of radius 1 length unit.at n=70A230073
• Noncube addends k > 0 such that x^3 + k produces a new minimum of its Hardy-Littlewood constant.at n=22A342569
• Nonnegative integers which produce a record maximum MD5 hash.at n=9A349646
• Products of four distinct primes between sphenic numbers (products of 3 distinct primes).at n=19A351382
• Expansion of 1 / ((1-x)^5 - x^5)^2.at n=8A392639