90390

Appears in sequences

• Number of balanced numbers <= 2^n.at n=40A078662
• a(0)=a(1)=a(2)=a(3)=a(4)=a(5)=1; a(n)=a(n-1)+a(n-2)-a(n-4)+a(n-6) for n>=6.at n=32A109537
• Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 3,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.at n=7A155305
• T(n,k)=Number of idempotent n X n -k..k matrices of rank 2.at n=13A220472
• T(n,k)=Number of idempotent n X n -k..k matrices of rank n-2.at n=13A220473
• T(n,k)=Number of length n+4 0..k arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.at n=36A249466
• Number of length 1+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.at n=8A249467
• Products of 5 distinct primes that are sandwiched between sphenic numbers.at n=10A376929