|
Search: id:A079466
|
|
|
| A079466 |
|
Numbers n such that the "inventory" A063850 of n is a palindrome. |
|
+0
2
|
|
| 1, 22, 112, 121, 211, 333, 1113, 1131, 1311, 3111, 4444, 11114, 11141, 11411, 14111, 22233, 22323, 22332, 23223, 23232, 23322, 32223, 32232, 32322, 33222, 41111, 55555
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
The Inventory Sequences and Self-Inventoried Numbers in www.primepuzzles.net
|
|
EXAMPLE
|
The "inventory" of 112 is 2112 (two "1"s, one "2"), which is a palindrome. Hence 112 belongs to the sequence.
|
|
MATHEMATICA
|
g[n_] := Module[{seen, r, d, l, i, t}, seen = {}; r = {}; d = IntegerDigits[n]; l = Length[d]; For[i = 1, i <= l, i++, t = d[[i]]; If[ ! MemberQ[seen, t], r = Join[r, IntegerDigits[Count[d, t]]]; r = Join[r, {t}]; seen = Append[seen, t]]]; FromDigits[r]]; isPalin[n_] := (n == FromDigits[Reverse[IntegerDigits[n]]]); Select[Range[10^5], isPalin[g[ # ]] &]
|
|
CROSSREFS
|
Cf. A063850. Different from A079676.
Sequence in context: A083123 A084017 A089184 this_sequence A079676 A061596 A074277
Adjacent sequences: A079463 A079464 A079465 this_sequence A079467 A079468 A079469
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 14 2003
|
|
|
Search completed in 0.002 seconds
|
