22008

Appears in sequences

• Number of (undirected) Hamiltonian paths in n-Moebius ladder.at n=28A020875
• Least k such that the first k terms of A006928 contain n more 2's than 1's.at n=13A025507
• Denominators of continued fraction convergents to sqrt(197).at n=3A041365
• a(n) = Sum_{d|3} phi(d)*n^(3/d).at n=28A054602
• a(n) = 3*(n-2)*(n-3)*(3*n^2-3*n-8)/2.at n=8A064198
• Sixth convolution of A000129(n+1) (generalized (2,1)-Fibonacci, called Pell numbers), n>=0, with itself.at n=5A073383
• Sum of product of divisors of n and sum of divisors of n.at n=27A076720
• Convolution of A000203 with partition function (A000041) of positive integers.at n=20A086732
• Numbers k such that 64*k^6 + 1091 is prime.at n=25A155809
• Sum of all parts of the partitions of n, minus sigma(n).at n=21A162329
• Numbers such that n^2 = 29 mod 1193.at n=36A165989
• Number of 6-step self-avoiding walks on an n X n square summed over all starting positions.at n=10A188151
• Sixth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.at n=22A215836
• Triangle T(n,k) in which n-th row lists the values of the n-th derivative at x=1 of all functions that are representable as x^x^...^x with n x's and parentheses inserted in all possible ways; n>=1, 1<=k<=A000081(n).at n=22A216349
• Triangle T(n,k) in which n-th row lists in increasing order the values of the n-th derivative at x=1 of all functions that are representable as x^x^...^x with n x's and parentheses inserted in all possible ways; n>=1, 1<=k<=A000081(n).at n=29A216350
• Least positive integer k such that prime(k*n)^2 - 2 = prime(i*n)*prime(j*n) for some integers 0 < i < j.at n=41A260080
• The first of two consecutive positive integers the sum of the squares of which is equal to the sum of the squares of ten consecutive positive integers.at n=10A261932
• Wiener index of graph of b.c.c. unit cells in a line = Sum of distances in a b.c.c. row graph.at n=12A273321
• Indices in A006928 where the imbalance between 1's and 2's sets a new record.at n=26A274775
• Number of (undirected) Hamiltonian paths on the n-prism graph.at n=25A308137