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A193592 Triangle read by rows having n-th row 1, n, n-1, n-2,..., 2, 1 for n>=0. 2
1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 4, 3, 2, 1, 1, 5, 4, 3, 2, 1, 1, 6, 5, 4, 3, 2, 1, 1, 7, 6, 5, 4, 3, 2, 1, 1, 8, 7, 6, 5, 4, 3, 2, 1, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 1, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

The triangle with its first column removed is A004736. - Hartmut F. W. Hoft, Jun 05 2017

LINKS

Table of n, a(n) for n=0..90.

EXAMPLE

Triangle begins:

1

1....1

1....2....1

1....3....2....1

1....4....3....2....1

MATHEMATICA

a193592[n_] := Map[Prepend[Range[#, 1, -1], 1]&, Range[0, n]]

Flatten[a193592[12] (* data *)

TableForm[a193592[4]] (* triangle *) (* Hartmut F. W. Hoft, Jun 05 2017 *)

CROSSREFS

Cf. A193593, A004736.

Sequence in context: A136622 A025474 A136575 * A243714 A278427 A077592

Adjacent sequences:  A193589 A193590 A193591 * A193593 A193594 A193595

KEYWORD

nonn,tabl

AUTHOR

Clark Kimberling, Jul 31 2011

EXTENSIONS

Corrected and added more terms by Hartmut F. W. Hoft, Jun 05 2017

STATUS

approved

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Last modified March 25 10:08 EDT 2019. Contains 321469 sequences. (Running on oeis4.)