36480

Appears in sequences

• Number of ways in which n identical balls can be distributed among 5 boxes in a row such that each pair of adjacent boxes contains at least 4 balls.at n=23A005338
• a(n) = n*(n+1)*(n^2 + n + 4)/4.at n=19A061316
• Numbers k such that (k+1)*phi(k) is a perfect square.at n=22A069952
• Numbers sandwiched between two numbers having only one prime divisor (at least) one of which is composite.at n=35A088072
• Prime(prime(n))^2-1.at n=13A092771
• A triangle of coefficients of a product polynomial sequence based on Chebyshev T:differentiation of T[(x,n) which gives U(x,n): p(x,n) = Product_{m=0..n} Sum_{i=0..m} (d/dx) T(x,i+1).at n=19A139809
• Numbers with prime factorization pqrs^7.at n=6A190473
• Constant term of the reduction by x^2 -> x+1 of the polynomial p(n,x) defined below in Comments.at n=9A192383
• Numbers k = concat(s,t) such that k = (Fibonacci(s) mod k) * (Fibonacci(t) mod k).at n=6A272770
• Coefficients in the expansion of 1/([r] + [2r]x + [3r]x^2 + ...); [ ] = floor, r = 7/4.at n=24A279678
• Both k and its reverse are one less than a square.at n=13A287389
• Wiener index of the n X n rook complement graph.at n=15A292058
• Number of n X 3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=7A296330
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=47A296335
• Numbers of the form p^2 - 1 where p is a prime of the form 3*k-1 (A003627).at n=22A301812
• Numbers k such that k = Product (p_j^e_j) = Product (p_j*(e_j + 1)).at n=10A304410
• a(n) = 144*n^2 - 24*n (n>=1).at n=15A305072
• Expansion of theta_4(theta_4(x) - 1), where theta_4() is the Jacobi theta function.at n=15A307186
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=5A316126
• Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=3A316128