A160232 - OEIS

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A160232

Array read by antidiagonals: row n has g.f. ((1-x)/(1-2x))^n.

1, 1, 1, 1, 2, 2, 1, 3, 5, 4, 1, 4, 9, 12, 8, 1, 5, 14, 25, 28, 16, 1, 6, 20, 44, 66, 64, 32, 1, 7, 27, 70, 129, 168, 144, 64, 1, 8, 35, 104, 225, 360, 416, 320, 128, 1, 9, 44, 147, 363, 681, 968, 1008, 704, 256, 1, 10, 54, 200, 553, 1182, 1970, 2528, 2400, 1536, 512, 1, 11, 65 (list; table; graph; refs; listen; history; internal format)

	OFFSET	`1,5`
	COMMENTS	`Suggested by a question from Phyllis Chinn (Humboldt State University).` `As triangle, mirror image of A105306. - From DELEHAM Philippe, Nov 01 2011`
	EXAMPLE	`Array begins:` `1, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, ...` `1, 2, 5, 12, 28, 64, 144, 320, 704, 1536, 3328, 7168, 15360, 32768, 69632, 147456, 311296, 655360, 1376256, ...` `1, 3, 9, 25, 66, 168, 416, 1008, 2400, 5632, 13056, 29952, 68096, 153600, 344064, 765952, 1695744, 3735552, ...` `1, 4, 14, 44, 129, 360, 968, 2528, 6448, 16128, 39680, 96256, 230656, 546816, 1284096, 2990080, 6909952, ...` `1, 5, 20, 70, 225, 681, 1970, 5500, 14920, 39520, 102592, 261760, 657920, 1632000, 4001280, 9708544, ...` `1, 6, 27, 104, 363, 1182, 3653, 10836, 31092, 86784, 236640, 632448, 1661056, 4296192, 10961664, 27630592, ...`
	CROSSREFS	`Rows give A011782, A045623, A058396, A062109, A169792-A169797.` `Cf. A062110, A105306` `Sequence in context: A054336 A079956 A140717 * A026300 A099514 A205575` `Adjacent sequences: A160229 A160230 A160231 * A160233 A160234 A160235`
	KEYWORD	`nonn,tabl`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 15 2010`

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.