login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A096153 Triangular array of natural numbers (greater than 1) arranged by ordered prime signature. 0
2, 3, 4, 5, 9, 6, 7, 25, 10, 8, 11, 49, 14, 27, 12, 13, 121, 15, 125, 20, 16, 17, 169, 21, 343, 28, 81, 18, 19, 289, 22, 1331, 44, 625, 50, 24, 23, 361, 26, 2197, 45, 2401, 75, 40, 30, 29, 529, 33, 4913, 52, 14641, 98, 56, 42, 32, 31, 841, 34, 6859, 63, 28561, 147, 88, 66 (list; table; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

The main diagonals are sequences A000040 (the prime numbers) and A055932 (the Quet prime signatures). A096011 displays other prime signatures which are not in A025487 (the least prime signature sequence).

EXAMPLE

a(28) = 18 because 18 = 2*3*3, thus has ordered prime signature (1,2).

CROSSREFS

Cf. A096156.

Sequence in context: A171100 A119586 A095904 * A083140 A124652 A048623

Adjacent sequences:  A096150 A096151 A096152 * A096154 A096155 A096156

KEYWORD

nonn,tabl

AUTHOR

Alford Arnold (Alford1940(AT)aol.com), Jul 24 2004

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 06:27 EST 2012. Contains 205998 sequences.