A068208 - OEIS

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A068208

Numbers n such that tau(n)-tau(n+1)=1.

4, 8, 81, 441, 625, 1089, 2024, 2401, 3025, 3968, 5624, 5929, 6561, 6723, 7569, 8281, 8463, 12321, 13225, 13688, 14161, 14641, 14884, 15375, 16641, 20164, 21608, 24025, 25921, 26895, 28561, 34225, 46225, 55225, 55695, 61009, 62001, 67081 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n) can not be a prime.`
	LINKS	`Enrique Pérez Herrero, Table of n, a(n) for n = 1..1000`
	FORMULA	`n such that A000005(n)-A000005(n+1)=1`
	CROSSREFS	`Sequence in context: A051226 A013112 A206346 * A090254 A120281 A057974` `Adjacent sequences: A068205 A068206 A068207 * A068209 A068210 A068211`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 23 2002`

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.