id:A082723 - OEIS Search Results

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Palindromic nonagonal (or 9-gonal or enneagonal) numbers.

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1, 9, 111, 474, 969, 6666, 18981, 67276, 4411144, 6964696, 15444451, 57966975, 448707844, 460595064, 579696975, 931929139, 994040499, 1227667221, 9698998969, 61556965516, 664248842466, 699030030996, 99451743334715499 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`P. De Geest, Palindromic nonagonals`
	CROSSREFS	`Cf. A001106, A055560.` `Adjacent sequences: A082720 A082721 A082722 this_sequence A082724 A082725 A082726` `Sequence in context: A053894 A053904 A058607 this_sequence A143167 A155624 A165224`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Apr 13 2003.`

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Last modified November 7 16:45 EST 2009. Contains 166093 sequences.

AT&T Labs Research