37536
domain: N
Appears in sequences
- Character of extremal vertex operator algebra of rank 17/2.at n=7A028526
- T(2n+1,n), array T as in A054144.at n=7A054148
- Consider the version of the Collatz or 3x+1 problem where x -> x/2 if x is even, x -> (3x+1)/2 if x is odd. Define the stopping time of x to be the number of steps needed to reach 1. Sequence gives the number of integers x with stopping time n.at n=38A060322
- Composite numbers k such that phi(k) divides sigma(k) - 2*k.at n=24A068412
- a(n) = number of ordered triples (w,x,y) such that w,x,y are all in {0,...,n} and the numbers |w-x|, |x-y|, |y-w| are distinct.at n=34A212963
- Convolution of natural numbers (A000027) with tetradecagonal numbers (A051866).at n=16A220212
- Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).at n=7A235291
- Number of (n+1) X (8+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).at n=0A235298
- T(n,k) is the number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).at n=28A235301
- T(n,k) is the number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant-stress 1 X 1 tilings).at n=35A235301
- Irreducible bridging trails on square lattice.at n=15A259856
- Number of compositions of n where each part i is marked with a word of length i over a binary alphabet whose letters appear in alphabetical order and both letters occur at least once in the composition.at n=7A293579
- a(n) is the absolute difference between the Pisano periods of prime(n)^2 and prime(n).at n=32A343117
- a(n) = Sum_{k=1..n} tau(gcd(k,n)^n), where tau(n) is the number of divisors of n.at n=47A344223
- Numbers k such that sigma(k) = 2*k + 3*phi(k).at n=5A392691