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A227048 Irregular triangle read by rows: row n, for n >= 0, lists the nonnegative differences 3^n - 2^m, m >= 0, in increasing order. 9
0, 1, 2, 1, 5, 7, 8, 11, 19, 23, 25, 26, 17, 49, 65, 73, 77, 79, 80, 115, 179, 211, 227, 235, 239, 241, 242, 217, 473, 601, 665, 697, 713, 721, 725, 727, 728, 139, 1163, 1675, 1931, 2059, 2123, 2155, 2171, 2179, 2183, 2185, 2186, 2465, 4513, 5537, 6049, 6305 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

A020914(n) = length of n-th row;

T(n,1) = A056577(n);

T(n,A098294(n)) = A001047(n);

T(n,A020914(n)) = A024023(n);

T(n,k) = A196486(n,A020914(n)-k) for n > 0, k = 1..A056576(n).

LINKS

Reinhard Zumkeller, Rows n = 0..100 of triangle, flattened

EXAMPLE

Initial rows:

0:  0

1:  1,2

2:  1,5,7,8

3:  11,19,23,25,26 (= 27-16, 27-8, 27-4, 27-2, 27-1)

4:  17,49,65,73,77,79,80

5:  115,179,211,227,235,239,241,242

6:  217,473,601,665,697,713,721,725,727,728

7:  139,1163,1675,1931,2059,2123,2155,2171,2179,2183,2185,2186

8:  2465,4513,5537,6049,6305,6433,6497,6529,6545,6553,6557,6559,6560

...

PROG

(Haskell)

a227048 n k = a227048_tabf !! n !! (k-1)

a227048_row n = a227048_tabf !! n

a227048_tabf = map f a000244_list  where

   f x = reverse $ map (x -) $ takeWhile (<= x) a000079_list

CROSSREFS

Cf. A000079, A000244, A192111.

See also A001047, A020914, A024023, A056576, A056577, A098294, A196486.

Sequence in context: A268489 A198422 A105459 * A139133 A183946 A293719

Adjacent sequences:  A227045 A227046 A227047 * A227049 A227050 A227051

KEYWORD

nonn,tabf

AUTHOR

Reinhard Zumkeller, Jun 29 2013

EXTENSIONS

Definition revised by N. J. A. Sloane, Oct 11 2019

STATUS

approved

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Last modified September 21 15:47 EDT 2021. Contains 347598 sequences. (Running on oeis4.)