A127439 Triangle read by rows, in which row n consists of first n terms of A054541.

2, 2, 1, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 4, 2, 1, 2, 2, 4, 2, 2, 1, 2, 2, 4, 2, 4, 2, 1, 2, 2, 4, 2, 4, 2, 2, 1, 2, 2, 4, 2, 4, 2, 4, 2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 4

Offset: 1

Author

Gary W. Adamson, Jan 14 2007

Keywords

• nonn
• tabl
• easy

Comments

Rows tend to A054541: (2, 1, 2, 2, 4, 2, 4, ...)

Examples

			prime(5) = 2 + 1 + 2 + 2 + 4 = 11.
From _Omar E. Pol_, Dec 23 2021: (Start)
Triangle begins:
  2;
  2, 1;
  2, 1, 2;
  2, 1, 2, 2;
  2, 1, 2, 2, 4;
  2, 1, 2, 2, 4, 2;
  2, 1, 2, 2, 4, 2, 4;
  2, 1, 2, 2, 4, 2, 4, 2;
  2, 1, 2, 2, 4, 2, 4, 2, 4;
  2, 1, 2, 2, 4, 2, 4, 2, 4, 6;
  2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2;
  2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6;
  2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 6, 4;
... (End)
		

Crossrefs

Row sums give A000040.

Cf. A054541, A001223.

Extensions

Edited by N. J. A. Sloane, Jan 27 2007

More terms from Omar E. Pol, Feb 21 2014