The On-Line Encyclopedia of Integer Sequences (OEIS)

A098355 revision #4

A098355

Multiplication table of the powers of three read by antidiagonals.

1, 3, 3, 9, 9, 9, 27, 27, 27, 27, 81, 81, 81, 81, 81, 243, 243, 243, 243, 243, 243, 729, 729, 729, 729, 729, 729, 729, 2187, 2187, 2187, 2187, 2187, 2187, 2187, 2187, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 19683, 19683, 19683, 19683, 19683, 19683

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

3^A003056: 3^n appears n+1 times.

LINKS

Jeremy Gardiner, Table of n, a(n) for n = 0..349

EXAMPLE

1; 3,3; 9,9,9; 27,27,27,27;

CROSSREFS

Cf. A000244, A003056, A003991, A098354, A137688.

Sequence in context: A336992 A349673 A064235 * A183429 A107443 A204099

Adjacent sequences: A098352 A098353 A098354 * A098356 A098357 A098358

KEYWORD

nonn,tabl

AUTHOR

Douglas Stones (dssto1(AT)student.monash.edu.au), Sep 04 2004

STATUS

proposed