login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A095992 a(1) = 30; for n > 1, a(n+1) = a(n) + {product of nonzero digits of a(n)}. 0
30, 33, 42, 50, 55, 80, 88, 152, 162, 174, 202, 206, 218, 234, 258, 338, 410, 414, 430, 442, 474, 586, 826, 922, 958, 1318, 1342, 1366, 1474, 1586, 1826, 1922, 1958, 2318, 2366, 2582, 2742, 2854, 3174, 3258, 3498, 4362, 4506, 4626, 4914, 5058, 5258, 5658 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

From a puzzle; explanation found by Pierre Roger.

LINKS

Table of n, a(n) for n=1..48.

Frank Rubin, Number Series

MATHEMATICA

a[1] = 30; a[n_] := a[n] = Block[{s = Sort[ IntegerDigits[a[n - 1]]]}, While[ s[[1]] == 0, s = Drop[s, 1]]; a[n - 1] + Times @@ s]; Table[ a[n], {n, 50}]

nxt[n_] := n+Times@@Select[IntegerDigits[n], #>0&]; NestList[nxt, 30, 50] (* Harvey P. Dale, Jan 08 2011 *)

CROSSREFS

Cf. A063108, A096347, A096972, A063108, A063425, A096922, A096923, A096924, A096925, A096926, A096927, A096928, A096929, A096930, A096931, A096973, A096987.

Sequence in context: A095471 A095465 A295693 * A061842 A109226 A218114

Adjacent sequences:  A095989 A095990 A095991 * A095993 A095994 A095995

KEYWORD

nonn,base,easy

AUTHOR

Julien Piquet (julipiquet(AT)yahoo.fr), Jul 18 2004

EXTENSIONS

The proposer suggests that this web site may contain other sequences also.

Edited and extended by Robert G. Wilson v and Klaus Brockhaus, Jul 20 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 27 03:01 EDT 2022. Contains 357051 sequences. (Running on oeis4.)