A113022 - OEIS

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A113022

a(n) = sorted union of 2^k (mod 10^n), 0<k<=5^n.

4, 21, 102, 503, 2504, 12505, 62506, 312507, 1562508, 7812509 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n+1)/a(n)~5.`
	MATHEMATICA	`Do[ Print[ Length[ Union[ Table[ PowerMod[2, i, 10^n], {i, 5^n}]] ]], {n, 10}]`
	CROSSREFS	`Cf. A095810, A113023.` `Sequence in context: A017967 A076901 A080043 * A014986 A015531 A083425` `Adjacent sequences: A113019 A113020 A113021 * A113023 A113024 A113025`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com) and Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 27 2004`

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.