|
Search: id:A085612
|
|
|
| A085612 |
|
Triangle in which the n-th row contains n numbers (beginning with the smallest unused value) that have the same prime signature as the first entry on that row. |
|
+0
3
|
|
| 1, 2, 3, 4, 9, 25, 5, 7, 11, 13, 6, 10, 14, 15, 21, 8, 27, 125, 343, 1331, 2197, 12, 18, 20, 28, 44, 45, 50, 16, 81, 625, 2401, 14641, 28561, 83521, 130321, 17, 19, 23, 29, 31, 37, 41, 43, 47, 22, 26, 33, 34, 35, 38, 39, 46, 51, 55, 24, 40, 54, 56, 88, 104, 135, 136, 152
(list; table; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
a(7) through a(10) = 5, 7, 11, 13 because 5 has not been used.
1;
2,3;
4,9,25;
5,7,11,13;
6,10,14,15,21;
8,27,125,343,1331,2197;
12,18,20,28,44,45,50;
16,81,625,2401,14641,28561,83521,130321;
|
|
CROSSREFS
|
Cf. A025487, A064839, A077558.
Cf. A085836.
Sequence in context: A122534 A101135 A088220 this_sequence A073915 A076381 A063455
Adjacent sequences: A085609 A085610 A085611 this_sequence A085613 A085614 A085615
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Alford Arnold (Alford1940(AT)aol.com), Jul 04 2003
|
|
EXTENSIONS
|
More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 21 2003
|
|
|
Search completed in 0.002 seconds
|
