A256466 Fermi-Dirac analog of EKG sequence (A064413): a(1)=1; a(2)=2; for n > 2, a(n) = smallest number not already used which shares a Fermi-Dirac factor with a(n-1).

1, 2, 6, 3, 12, 4, 8, 10, 5, 15, 20, 24, 14, 7, 21, 27, 9, 18, 22, 11, 33, 30, 26, 13, 39, 42, 28, 35, 40, 32, 16, 48, 51, 17, 34, 38, 19, 57, 54, 36, 44, 52, 56, 46, 23, 69, 60, 45, 55, 65, 70, 50, 25, 75, 66, 58, 29, 87, 78, 62, 31, 93, 84, 63, 72, 64, 68

Offset

1,2

Comments

Every positive integer is a unique product of distinct terms of A050376, which is called a Fermi-Dirac factorization of n.

Links

Peter J. C. Moses, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A064413, A050376.

Sequence in context: A297553 A347558 A317490 * A303771 A298480 A353916

Adjacent sequences: A256463 A256464 A256465 * A256467 A256468 A256469

Keyword

nonn

Author

Vladimir Shevelev, Mar 30 2015

Extensions

More terms from Peter J. C. Moses, Mar 30 2015

Status

approved