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A097641 Numbers n such that n=d_1^pi(d_1)+d_2^pi(d_2)+...+d_k^pi(d_k) where d_1 d_2 ... d_k is the decimal expansion of n. 1
1, 2, 135, 2537 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

EXAMPLE

2537 is in the sequence because 2537 = 2^pi(2)+5^pi(5))+3^pi(3)+7^pi(7).

CROSSREFS

Cf. A097640.

Sequence in context: A221468 A327911 A318965 * A065963 A226118 A216030

Adjacent sequences:  A097638 A097639 A097640 * A097642 A097643 A097644

KEYWORD

base,fini,full,nonn

AUTHOR

Farideh Firoozbakht, Aug 22 2004

STATUS

approved

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Last modified October 24 01:41 EDT 2021. Contains 348217 sequences. (Running on oeis4.)