A332663 Even bisection of A332662: the x-coordinates of an enumeration of N X N.

0, 0, 1, 2, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21

Offset

0,4

Links

Zhuorui He, Table of n, a(n) for n = 0..11479 (Rows 0..39 of the triangle)

Formula

a(n) = A124171(n+1) - 1.

Example

From Zhuorui He, Nov 10 2025: (Start)
Written as an irregular triangle the sequence begins:
  0;
  0,1,2;
  0,1,2,3,4,5;
  0,1,2,3,4,5,6,7,8,9;
  0,1,2,3,4,5,6,7,8,9,10,11,12,13,14;
Row n has A000217(n+1) terms. (End)

Maple

# See A332662.

Crossrefs

Cf. A332662, A002260, A014370, A000292 (positions of 0), A124171.

Sequence in context: A262678 A238794 A135317 * A227179 A115218 A393813

Adjacent sequences: A332660 A332661 A332662 * A332664 A332665 A332666

Keyword

nonn,tabf,easy

Author

Peter Luschny, Feb 19 2020

Status

approved