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A134478 Triangle read by rows, T(0,0) = 1; n-th row = (n+1) terms of n, n+1, n+2, ... 3
1, 1, 2, 2, 3, 4, 3, 4, 5, 6, 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 9, 10, 11, 12, 7, 8, 9, 10, 11, 12, 13, 14, 8, 9, 10, 11, 12, 13, 14, 15, 16, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Apart from the irregular choice of T(0,0) the same as A051162. - R. J. Mathar, Mar 28 2012

LINKS

G. C. Greubel, Table of n, a(n) for the first 100 rows, flattened

EXAMPLE

First few rows of the triangle:

  1;

  1, 2;

  2, 3, 4;

  3, 4, 5,  6;

  4, 5, 6,  7,  8;

  5, 6, 7,  8,  9, 10;

  6, 7, 8,  9, 10, 11, 12;

  7, 8, 9, 10, 11, 12, 13, 14;

  ...

MATHEMATICA

Join[{1}, Flatten[Table[Range[n, 2n], {n, 10}]]] (* Harvey P. Dale, Nov 21 2014 *)

PROG

(PARI) concat([1], for(n=1, 10, for(k=0, n, print1(n+k, ", ")))) \\ G. C. Greubel, Sep 24 2017

CROSSREFS

Cf. A051162, A134479 (row sums), A126804 (row products).

Sequence in context: A185977 A204006 A106251 * A051162 A122872 A132919

Adjacent sequences:  A134475 A134476 A134477 * A134479 A134480 A134481

KEYWORD

nonn,less,tabl

AUTHOR

Gary W. Adamson, Oct 27 2007

STATUS

approved

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Last modified May 27 16:48 EDT 2022. Contains 354110 sequences. (Running on oeis4.)