77490

Appears in sequences

• Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,57.at n=20A065697
• Triangle read by rows where the n-th row is the first row of M^n, with M the (n+1)-by-(n+1) matrix with (3,1,3,1,3,1,...) on its main diagonal and (1,3,1,3,1,3,...) on its superdiagonal.at n=49A124573
• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives x numbers.at n=17A125490
• Numbers n such that sigma(n) = 14*phi(n) (where sigma=A000203, phi=A000010).at n=8A171259
• Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.at n=8A252146
• Number of (n+3)X(4+3) 0..1 arrays with each row and column divisible by 11, read as a binary number with top and left being the most significant bits.at n=5A262239
• T(n,k) = Number of (n+3) X (k+3) 0..1 arrays with each row and column divisible by 11, read as a binary number with top and left being the most significant bits.at n=39A262240
• T(n,k) = Number of (n+3) X (k+3) 0..1 arrays with each row and column divisible by 11, read as a binary number with top and left being the most significant bits.at n=41A262240
• Numbers n such that n * (x-1)/x produces a rotation of the digits in n for some value of x.at n=41A288626
• Numbers whose divisors have a harmonic mean with a denominator 2.at n=27A348411
• T(n, k) = binomial(n, k)*hypergeom([(1 - n)/2, -n/2], [1], 4).at n=40A376827