A001257 - OEIS

This site is supported by donations to The OEIS Foundation.

A001257

Squares of numbers of rooted trees.

1, 1, 4, 16, 81, 400, 2304, 13225, 81796, 516961, 3392964, 22714756, 155900196, 1087218729, 7710771721, 55404215161, 403030713409, 2962388303281, 21983682632976, 164512124707984, 1240577449436224 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to rooted trees`
	CROSSREFS	`Cf. A000081.` `Sequence in context: A003471 A002777 A118997 * A133053 A110378 A076997` `Adjacent sequences: A001254 A001255 A001256 * A001258 A001259 A001260`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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

Last modified February 15 04:23 EST 2012. Contains 205694 sequences.