The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A037023 Triangle in which row n has the first n digits of sqrt(n) (rounded). 2
 1, 1, 4, 1, 7, 3, 2, 0, 0, 0, 2, 2, 3, 6, 1, 2, 4, 4, 9, 4, 9, 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, 4, 3, 4, 6, 4, 1, 0, 1, 6, 1, 5, 1, 4, 3, 6, 0, 5, 5, 5, 1, 2, 7, 5, 4, 6, 4, 3, 7, 4, 1, 6, 5, 7, 3 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS T. D. Noe, Rows n = 1..100 of triangle, flattened MATHEMATICA sds[n_]:=Module[{c=RealDigits[Sqrt[n], 10, n+1][[1]]}, If[Last[c]<5, Most[c], IntegerDigits[FromDigits[Most[c]]+1]]]; Flatten[Array[sds, 20]] (* Harvey P. Dale, Dec 13 2011 *) CROSSREFS Cf. A037022. Sequence in context: A158860 A335619 A037022 * A143971 A016688 A143972 Adjacent sequences:  A037020 A037021 A037022 * A037024 A037025 A037026 KEYWORD nonn,base,nice,easy,tabl AUTHOR Jonas Persson (jptmp(AT)hotmail.com), N. J. A. Sloane STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 17 07:36 EDT 2021. Contains 343966 sequences. (Running on oeis4.)