A130830 Irregular triangle read by rows: row(n) consists of the first A011764(n-1) terms of A006047.

1, 2, 3, 1, 2, 3, 2, 4, 6, 3, 6, 9, 1, 2, 3, 2, 4, 6, 3, 6, 9, 2, 4, 6, 4, 8, 12, 6, 12, 18, 3, 6, 9, 6, 12, 18, 9, 18, 27, 2, 4, 6, 4, 8, 12, 6, 12, 18, 4, 8, 12, 8, 16, 24, 12, 24, 36, 6, 12, 18, 12, 24, 36, 18, 36, 54, 3, 6, 9, 6, 12, 18, 9, 18, 27, 6, 12, 18, 12, 24, 36, 18, 36, 54, 9, 18, 27

Offset

1,2

Links

Table of n, a(n) for n=1..87.

Example

Triangle begins:
{1, 2, 3},
{1, 2, 3, 2, 4, 6, 3, 6, 9},
{1, 2, 3, 2, 4, 6, 3, 6, 9, 2, 4, 6, 4, 8, 12, 6, 12, 18, 3, 6, 9, 6, 12, 18, 9, 18, 27, 2, 4, 6, 4, 8, 12, 6, 12, 18, 4, 8, 12, 8, 16, 24, 12, 24, 36, 6, 12, 18, 12, 24, 36, 18, 36, 54, 3, 6, 9, 6, 12, 18, 9, 18, 27, 6, 12, 18, 12, 24, 36, 18, 36, 54, 9, 18, 27, 18, 36, 54, 27, 54, 81}, ...

Crossrefs

Cf. A011764, A115245, A130831.

Sequence in context: A105315 A328912 A356327 * A131989 A305390 A344310

Adjacent sequences: A130827 A130828 A130829 * A130831 A130832 A130833

Keyword

nonn,less,tabf

Author

Roger L. Bagula, Aug 20 2007

Extensions

Edited by N. J. A. Sloane, Jun 07 2008

Status

approved