A047902 a(1) = 11; for n > 0, a(n+1) = a(n) * sum of digits of a(n).

11, 22, 88, 1408, 18304, 292864, 9078784, 390387712, 15615508480, 671466864640, 38945078149120, 2375649767096320, 180549382299320320, 12638456760952422400, 960522713832384102400, 67236589968266887168000

Offset

1,1

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..250

Formula

a(n+1) = A057147(a(n)). - Reinhard Zumkeller, Mar 19 2014

Prog

(Haskell)
a047902 n = a047902_list !! (n-1)
a047902_list = iterate a057147 11  -- Reinhard Zumkeller, Mar 19 2014

Crossrefs

Cf. A047892 (start=2), A047912 (start=3), A047897 (start=5), A047898 (start=6), A047899 (start=7), A047900 (start=8), A047901 (start=9).

Sequence in context: A109687 A225361 A111696 * A081930 A143964 A034708

Adjacent sequences: A047899 A047900 A047901 * A047903 A047904 A047905

Keyword

easy,nonn,base

Author

Miklos SZABO (mike(AT)ludens.elte.hu)

Status

approved