A282717 Number of nonzero entries in row n of A282716.

1, 2, 3, 4, 4, 5, 6, 6, 6, 8, 9, 8, 8, 7, 10, 12, 12, 12, 10, 12, 12, 8, 12, 15, 16, 16, 15, 18, 18, 12, 16, 18, 16, 16, 9, 14, 18, 20, 20, 20, 24, 24, 18, 24, 27, 24, 24, 14, 20, 24, 24, 24, 20, 24, 24, 10, 16, 21, 24, 24, 25, 30, 30, 24, 32, 36, 32, 32, 21

Offset

0,2

Links

Lars Blomberg, Table of n, a(n) for n = 0..10000

Julien Leroy, Michel Rigo, and Manon Stipulanti, Counting the number of non-zero coefficients in rows of generalized Pascal triangles, Discrete Mathematics 340 (2017), 862-881.

Michel Rigo and Manon Stipulanti, Revisiting regular sequences in light of rational base numeration systems, arXiv:2103.16966 [cs.FL], 2021. Mentions this sequence.

Example

Table 4 of Leroy et al. (2017) shows that this sequence may also be presented as an irregular triangle,
1,
2,
3,
4,4,
5,6,6,
6,8,9,8,8,
7,10,12,12,12,10,12,12,
8,12,15,16,16,15,18,18,12,16,18,16,16,
...

Crossrefs

Cf. A282716.

A282731 gives partial sums.

Sequence in context: A126974 A354459 A089058 * A187103 A303735 A080444

Adjacent sequences: A282714 A282715 A282716 * A282718 A282719 A282720

Keyword

nonn,tabf

Author

N. J. A. Sloane, Mar 02 2017

Extensions

More terms from Lars Blomberg, Mar 03 2017

Status

approved