A307150 Row 6 of array in A059897.

6, 3, 2, 24, 30, 1, 42, 12, 54, 15, 66, 8, 78, 21, 10, 96, 102, 27, 114, 120, 14, 33, 138, 4, 150, 39, 18, 168, 174, 5, 186, 48, 22, 51, 210, 216, 222, 57, 26, 60, 246, 7, 258, 264, 270, 69, 282, 32, 294, 75, 34, 312, 318, 9, 330, 84, 38, 87, 354, 40, 366, 93

Offset: 1

Author

N. J. A. Sloane, Mar 29 2019

Keywords

• nonn

Comments

From Peter Munn, Apr 02 2019: (Start)

Also column 6 of A059897.

A self-inverse permutation of the positive integers with no fixed points; A073675 composed with A120229.

The permutation swaps pairs of integers whose ratio is 1:6 or 2:3, these ratios corresponding to the factorizations 1*6 = 2*3 = 6. Row 6 is the first row of A059897 to exhibit more than 1 such ratio.

(End)

The integers in the pairs with ratio 1:6 are listed in A036668, the integers in the pairs with ratio 2:3 are listed in A325424. - Peter Munn, Mar 05 2020

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A036668, A059897, A073675, A120229, A325424.

Formula

From Peter Munn, Apr 02 2019: (Start)

a(n) = A059897(6,n) = A059897(n,6).

a(n) = A073675(A120229(n)) = A120229(A073675(n)) = A073675(n) * A120229(n) / n.

(End)

Extensions

More terms from Alois P. Heinz, Mar 31 2019