52328

Appears in sequences

• Quadrinomial coefficients: C(2+n,n) + C(3+n,n) + C(4+n,n).at n=30A005718
• Numbers k such that sigma(sigma(k)) == phi(k) (mod sigma(k)).at n=17A067204
• G.f. is the polynomial (Product_{k=1..32} (1 - x^(3*k)))/(1-x)^32.at n=4A162739
• G.f.: exp( Sum_{n>=1} A001511(n)*2^A001511(n)*x^n/n ) where A001511(n) equals the 2-adic valuation of 2n.at n=24A183036
• Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=5A235181
• Number of (n+1) X (6+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=2A235184
• T(n,k) is the number of (n+1) X (k+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=30A235186
• T(n,k) is the number of (n+1) X (k+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=33A235186
• Second component B of the pairs (A, B) from A389379.at n=10A389390