id:A139178 - OEIS Search Results

Search: id:A139178

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Numbers n such that n=(pi(d_1)+pi(d_1!)+pi(d_1!!))+...+ (pi(d_k)+pi(d_k!)+pi(d_k!!)) where d_1 d_2 ... d_k is the decimal expansion of n.

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54, 713, 724, 4348 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`4348=(pi(4)+pi(4!)+pi(4!!))+(pi(3)+pi(3!)+pi(3!!))+(pi(4)+ pi(4!)+pi(4!!))+(pi(8)+pi(8!)+pi(8!!)) so 4348 is in the sequence.`
	CROSSREFS	`Sequence in context: A128961 A090835 A069980 this_sequence A157094 A093972 A008401` `Adjacent sequences: A139175 A139176 A139177 this_sequence A139179 A139180 A139181`
	KEYWORD	`base,fini,full,nonn`
	AUTHOR	`Farideh Firoozbakht (mymontain(AT)yahoo.com), Apr 12 2008`

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