44064

Appears in sequences

• Coefficients of Jacobi cusp form of index 1 and weight 10.at n=47A003784
• a(n) = n + (n+1)^2 + (n+2)^3.at n=33A027620
• Least k such that Sum_{i=1..k} gcd(k,i) = n * sigma(k).at n=7A072108
• Coefficients in expansion of Eisenstein series -q*E'_2.at n=33A076835
• a(n) = n*(n+2)^2.at n=34A152619
• Numbers with prime factorization pq^4r^5.at n=7A190468
• The first of three triangles counting 3-colored alternating permutations by their last value.at n=23A202692
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=6A208067
• Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=5A208072
• Expansion of the g.f. (x^2-x+1)*(x^2-3*x+3)/(x-1)^6.at n=19A257890
• Number of 2 X 2 matrices with entries in {0,1,...,n} and even trace with no entries repeated.at n=18A280056
• a(n) = 34*n^2.at n=36A303302
• Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).at n=14A320893
• Numbers k for which A306927(k) [= A001615(k)-k] is a multiple of A344705(k) [= A001615(k)-A001065(k)], and their quotient is nonnegative.at n=43A344700
• Numbers k >= 1 such that A018804(k) divided by A000203(k) is an integer.at n=22A349726
• a(n) = Sum_{k=0..floor(n/2)} binomial(5*n-2*k-1,n-2*k).at n=5A371753
• Numbers k for which sigma(k) >= 2*k and (sigma(k) - 2*k) AND k = k, where AND is bitwise-and, A004198.at n=31A388026