A130831 Irregular triangle read by rows: row(n) contains the first A001146(n) terms of A001316.

1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 4, 8, 2, 4, 4, 8, 4, 8, 8, 16, 1, 2, 2, 4, 2, 4, 4, 8, 2, 4, 4, 8, 4, 8, 8, 16, 2, 4, 4, 8, 4, 8, 8, 16, 4, 8, 8, 16, 8, 16, 16, 32, 2, 4, 4, 8, 4, 8, 8, 16, 4, 8, 8, 16, 8, 16, 16, 32, 4, 8, 8, 16, 8, 16, 16, 32, 8, 16, 16, 32, 16, 32, 32, 64, 2, 4, 4, 8, 4, 8, 8, 16

Offset

1,2

Comments

The n-th row of the triangle consists of the first A001146(n) terms of A001316. - Benjamin Heiland, Dec 12 2011

Links

Table of n, a(n) for n=1..94.

Example

Triangle begins:
{1, 2},
{1, 2, 2, 4},
{1, 2, 2, 4, 2, 4, 4, 8, 2, 4, 4, 8, 4, 8, 8, 16}
...

Crossrefs

Cf. A001146, A060803, A130830.

Sequence in context: A345161 A321319 A048896 * A151678 A273126 A151681

Adjacent sequences: A130828 A130829 A130830 * A130832 A130833 A130834

Keyword

nonn,less,tabf

Author

Roger L. Bagula, Aug 20 2007

Extensions

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

New name using Benjamin Heiland's comment, Joerg Arndt, May 11 2023

Status

approved