41496

Appears in sequences

• Expansion of ( 1-x ) / ( 1-x-3*x^2+x^3 ).at n=15A052973
• Successive maxima in sequence A007365.at n=17A065933
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=7.at n=40A076673
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=10.at n=40A076675
• Smallest a(n)>a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, a(1)=11.at n=38A076676
• a(n) is the square of the n-th partial sum minus the n-th partial sum of the squares, divided by a(n-1), for all n>=1, starting with a(0)=1, a(1)=3.at n=14A087956
• Generalized Stirling2 array (7,2).at n=12A091747
• Sum_{k=1..2n-1} J(4*n,k)*k^2, where J(i,j) is the Jacobi symbol.at n=35A097544
• Irregular array read by rows, where n-th row gives denominators of the Egyptian fraction expansion, derived using the greedy algorithm, for the absolute value of the fractional part of the (2n)th Bernoulli number.at n=18A136375
• Multiples of 1729, the Hardy-Ramanujan number.at n=24A138129
• a(n) = 1728*n + 24.at n=23A157325
• Numbers with prime factorization pqrst^3.at n=31A189984
• Common differences in triples of squares in arithmetic progression, that are not a multiples of other triples in (A198384, A198385, A198386).at n=37A198438
• Number of partitions of n such that the number of parts and the greatest part are not coprime.at n=45A200792
• Triangle S(n,k) by rows: coefficients of 6^((n-1)/2)*(x^(1/6)*d/dx)^n when n is odd, and of 6^(n/2)*(x^(5/6)*d/dx)^n when n is even.at n=20A223172
• Triangle S(n,k) by rows: coefficients of 6^(n/2)*(x^(5/6)*d/dx)^n when n=0,2,4,6,...at n=11A223532
• Numerator of the side lengths (legs in ascending order) of the easiest Pythagorean Triangle (with smallest hypotenuse) according to the congruent numbers A003273.at n=28A268602
• Numbers n such that the multiplicative group modulo n is the direct product of 6 cyclic groups.at n=35A272596
• a(n) = 6*n*(9*n-5).at n=28A277984
• Maximal overhang that can be attained from a stack of blocks of lengths 1,2,...,n (denominators).at n=6A298021