A256416 Positive integers with primes p replaced by 2p and also 3p replaced by 2p, then sorted into increasing order.

1, 4, 4, 4, 6, 6, 8, 10, 10, 10, 12, 14, 14, 14, 16, 18, 20, 22, 22, 22, 24, 25, 26, 26, 26, 27, 28, 30, 32, 34, 34, 34, 35, 36, 38, 38, 38, 40, 42, 44, 45, 46, 46, 46, 48, 49, 50, 52, 54, 55, 56, 58, 58, 58, 60, 62, 62, 62, 63, 64, 65, 66

Offset

1,2

Comments

Odd primes p and three times odd primes are missing; twice primes (except 6) each appear three times.

The smoothed version of A064413 (A256417) is a rearrangement of these terms.

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A064413, A256415 (the unsorted sequence), A256417.

Sequence in context: A277433 A219760 A097918 * A256417 A229630 A141466

Adjacent sequences: A256413 A256414 A256415 * A256417 A256418 A256419

Keyword

nonn

Author

N. J. A. Sloane, Apr 05 2015

Status

approved