44160

Appears in sequences

• Theta series of A*_15 lattice.at n=71A023927
• Expansion of L(x)^(1/2), where L(x) is the g.f. for the Catalan Larcombe-French sequence A053175.at n=5A090004
• Triangle T(n,k) read by rows: number of permutations in [n] with exactly k ascents that have an odd number of inversions.at n=39A128613
• Triangle T(n,k) read by rows: number of permutations in [n] with exactly k ascents that have an odd number of inversions.at n=41A128613
• Array t(n, k) = (k*(n-1) +2-k)*t(n-1, k) + k*t(n-2, k), with t(1, k) = 1, t(2, k) = 2, read by antidiagonals.at n=39A144446
• Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} having k descents. (n>=1, k>=1).at n=28A145883
• Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} having k descents. (n>=1, k>=1).at n=30A145883
• a(n) = 49*n^2 + 2*n.at n=29A157365
• Numbers k divisible respectively by the sum of digits, the sum of the squares and the sum of the cubes of digits in base 10 of k.at n=37A169664
• Number of 6-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=17A187176
• Numbers with prime factorization pqrs^7.at n=7A190473
• Number of nondecreasing -2..2 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -2..2 vector equals n.at n=29A226416
• Number of partitions of n such that (greatest part) - (least part) <= number of parts.at n=43A237831
• Numbers k such that k = Product (p_j^e_j) = Product (p_j*(e_j + 1)).at n=11A304410
• Numbers such that the sum of divisors divides the concatenation (in ascending order) of divisors.at n=18A308486