id:A139180 - OEIS Search Results

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Smallest number m greater than 1 such that m=(Sum_{i=1..k} d_i!)^n where d_1 d_2 ... d_k is the decimal expansion of m, or 0 if no m exists.

+0
2

2, 172603687936, 3910825640696988096, 396867211295273131775761, 13586030059671762261567625351, 4218282992523473247642107344280879104, 5572272365289149102816175194628254483025277 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A139181(n)=A139180(n)^(1/n).`
	EXAMPLE	`172603687936=(1!+7!+2!+6!+0!+3!+6!+8!+7!+9!+3!+6!)^2`
	CROSSREFS	`Cf. A014080, A137604, A137605.` `Sequence in context: A154423 A072293 A158343 this_sequence A072947 A077303 A007352` `Adjacent sequences: A139177 A139178 A139179 this_sequence A139181 A139182 A139183`
	KEYWORD	`base,nonn`
	AUTHOR	`Farideh Firoozbakht (mymontain(AT)yahoo.com), Apr 22 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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