A037022 Triangle in which row n has the first n digits of sqrt(n) (truncated).

1, 1, 4, 1, 7, 3, 2, 0, 0, 0, 2, 2, 3, 6, 0, 2, 4, 4, 9, 4, 8, 2, 6, 4, 5, 7, 5, 1, 2, 8, 2, 8, 4, 2, 7, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 6, 2, 2, 7, 7, 6, 6, 0, 3, 3, 1, 6, 6, 2, 4, 7, 9, 0, 3, 3, 4, 6, 4, 1, 0, 1, 6, 1, 5, 1, 3, 3, 6, 0, 5, 5, 5, 1, 2, 7, 5, 4, 6, 3, 3, 7, 4, 1, 6, 5, 7, 3

Offset: 1

Author

Jonas Persson (jptmp(AT)hotmail.com), N. J. A. Sloane

Keywords

• nonn
• base
• nice
• easy
• tabl

Examples

			Triangle starts:
  1;
  1, 4;
  1, 7, 3;
  2, 0, 0, 0;
  2, 2, 3, 6, 0;
  2, 4, 4, 9, 4, 8;
  2, 6, 4, 5, 7, 5, 1;
  ...
		

Links

• T. D. Noe, Rows n=1..100 of triangle, flattened

Crossrefs

Cf. A000196 (first column), A023961 (second column), A037023.

Programs

Mathematica

row[n_] := RealDigits[Sqrt[n], 10, n][[1]]; Table[row[n], {n, 1, 14}] // Flatten (* Jean-François Alcover, Dec 03 2016 *)