A120370 a(1) = 2. a(n) = a(n-1) + (maximum number of distinct primes dividing any earlier terms).

2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105, 108, 111, 114, 117, 120, 123, 126, 129, 132, 135, 138, 141, 144, 147, 150, 153, 156, 159, 162, 165, 168

Offset

1,1

Links

Table of n, a(n) for n=1..63.

Example

210 follows 207 in the sequence because the greatest number of distinct primes dividing any earlier terms of the sequence is 3.
210 in the sequence is followed by 214 because 4 distinct primes divide 210, the first term of the sequence divisible by 4 distinct primes.

Crossrefs

Sequence in context: A004279 A274039 A005377 * A011866 A392071 A321152

Adjacent sequences: A120367 A120368 A120369 * A120371 A120372 A120373

Keyword

easy,nonn

Author

Leroy Quet, Jun 27 2006

Status

approved