A131759 - OEIS

A131759

Numbers n such that if for every digit K of n you calculate prime(K)^K and sum for all digits you get n (assumes that prime(0)^0 = 1).

2420, 2421, 3602725959565

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OFFSET

1,1

LINKS

EXAMPLE

2421 is in the sequence because prime(2)^2 + prime(4)^2 + prime(2)^2 + prime(1)^1 = 3^2 + 7^4 + 3^2 + 2^1 = 2421.

CROSSREFS

KEYWORD

fini,full,nonn,base,bref

AUTHOR

Tanya Khovanova and Alexey Radul, Sep 17 2007

STATUS

approved