

A134478


Triangle read by rows, T(0,0) = 1; nth 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
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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



