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

1,3

Links

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

Example

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;
  ...

Mathematica

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

Crossrefs

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

Sequence in context: A245838 A158860 A335619 * A037023 A143971 A367898

Adjacent sequences: A037019 A037020 A037021 * A037023 A037024 A037025

Keyword

nonn,base,nice,easy,tabl

Author

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

Status

approved