A077669 Triangle read by rows. Let k = n-th composite number. Then n-th row gives n smallest numbers unrelated to k (numbers which do not divide k, are not divisible by k and are not coprime to k).

6, 4, 8, 6, 10, 12, 6, 12, 15, 21, 4, 6, 8, 12, 14, 8, 9, 10, 14, 15, 16, 4, 6, 8, 10, 12, 16, 18, 6, 9, 10, 12, 18, 20, 21, 24, 6, 10, 12, 14, 18, 20, 22, 24, 26, 4, 8, 10, 12, 14, 15, 16, 20, 21, 22, 6, 8, 12, 14, 15, 16, 18, 22, 24, 25, 26, 6, 9, 12, 14, 15, 18, 24, 27, 28, 30

Offset

1,1

Comments

Primes do not have unrelated numbers.

Links

Table of n, a(n) for n=1..76.

Example

The first few rows are:
  6;
  4, 8;
  6, 10, 12;
  6, 12, 15, 21;
  4, 6, 8, 12, 14;
  ...

Crossrefs

Cf. A077667, A077668, A077670.

Sequence in context: A334960 A340322 A176786 * A019774 A354630 A254250

Adjacent sequences: A077666 A077667 A077668 * A077670 A077671 A077672

Keyword

nonn,less,tabl

Author

Amarnath Murthy, Nov 15 2002

Extensions

More terms from Sascha Kurz, Jan 27 2003

Offset corrected by Mohammed Yaseen, Oct 18 2023

Status

approved