40922

Appears in sequences

• Denominators of continued fraction convergents to sqrt(91).at n=12A041163
• Denominators of continued fraction convergents to sqrt(819).at n=16A042581
• Partial sums of usigma(n)^2: square of the sum of unitary divisors of n.at n=38A074789
• Number of permutations of floor(i*5/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.at n=8A147893
• T(n,k)=Number of (n+2)X(k+2) 0..7 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.at n=1A186574
• T(n,k)=Number of (n+2)X(k+2) 0..7 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.at n=2A186574
• Expansion of Product_{k>=1} 1/(1 - x^prime(k))^2.at n=45A298436
• Lesser of 2 successive tetraprimes (k, k+4) sandwiching three consecutive not squarefree numbers.at n=8A367791
• Expansion of Sum_{k>=0} k! * ( x * (1+x^3) )^k.at n=8A370510