1296000

Appears in sequences

• Number of primitive polynomials of degree n over GF(2) (version 2).at n=24A000020
• Highly powerful numbers: numbers with record value of the product of the exponents in prime factorization (A005361).at n=35A005934
• Number of primitive polynomials of degree n over GF(2).at n=24A011260
• Numbers of form 6^i*10^j with i, j >= 0.at n=31A025629
• Consider numbers which are denominators of at least one reduced rational sum{k=1 to m} 1/k^n, taken over all positive integers m and n (a sequence not yet in the database). Sequence gives denominators which occur more than once.at n=5A094515
• Totally multiplicative sequence with a(p) = 6*(p+3) for prime p.at n=39A167325
• Number of (n+1) X 2 0..2 arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum.at n=5A185771
• Number of (n+1)X7 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=0A185776
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=15A185777
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.at n=20A185777
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.at n=15A253164
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.at n=20A253164
• T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.at n=15A253294
• T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.at n=20A253294
• The sum (in nondecreasing order) of the two numbers in an amicable pair.at n=31A259953
• The sum (in nondecreasing order) of the two numbers in an amicable pair.at n=32A259953
• Powerful superabundant numbers: numbers m such that psigma(m)/m > psigma(k)/k for all k < m, where psigma(k) is the sum of powerful divisors of k (A183097).at n=24A349111
• Amicable numbers k that can be expressed as a sum k = x+y = A001065(x) + A001065(y) and a sum k = z+t = A001065(z) + A001065(t) where (x, y, z, t) are parts of two amicable pairs and A001065(i) is the sum of the aliquot parts of i.at n=1A359334
• Cubefull numbers (A036966) with a record gap to the next cubefull number.at n=39A363014
• a(n) = Sum_{k=0..floor(n/3)} 2^k * binomial(k,n-3*k)^2.at n=28A387477