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A337356
Numbers whose digit sum of their square is equal to their square root.
0
0, 1, 49, 484, 625, 784, 1296
OFFSET
1,3
FORMULA
a(n) = A055575(n)^2. - Joerg Arndt, Sep 01 2020
MATHEMATICA
Select[Range[0, 36], Plus @@ IntegerDigits[#^4] == # &]^2 (* Amiram Eldar, Sep 08 2020 *)
CROSSREFS
Cf. A055575.
Sequence in context: A263706 A263707 A061621 * A030510 A104935 A110203
KEYWORD
nonn,base,fini,full
AUTHOR
Evzen Stejskal, Aug 24 2020
STATUS
approved