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A139178 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. 0
54, 713, 724, 4348 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

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: A321635 A090835 A069980 * A288838 A157094 A232829

Adjacent sequences:  A139175 A139176 A139177 * A139179 A139180 A139181

KEYWORD

base,fini,full,nonn

AUTHOR

Farideh Firoozbakht, Apr 12 2008

STATUS

approved

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Last modified April 23 09:49 EDT 2021. Contains 343204 sequences. (Running on oeis4.)