id:A008510 - OEIS Search Results

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Both n and n-th triangular number are palindromes.

+0
9

1, 2, 3, 11, 77, 363, 1111, 2662, 111111, 246642, 11111111, 363474363, 2664444662, 26644444662, 246644446642, 266444444662, 2466444446642, 3654345456545434563 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`D. Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, 93.`
	LINKS	`P. De Geest, Subsets of palindromic triangulars` `P. De Geest, For the last term`
	CROSSREFS	`Sequence in context: A001052 A155187 A109132 this_sequence A042165 A089921 A056899` `Adjacent sequences: A008507 A008508 A008509 this_sequence A008511 A008512 A008513`
	KEYWORD	`nonn,base`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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