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A037022
Triangle in which row n has the first n digits of sqrt(n) (truncated).
2
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
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
KEYWORD
nonn,base,nice,easy,tabl
AUTHOR
Jonas Persson (jptmp(AT)hotmail.com), N. J. A. Sloane
STATUS
approved