

A117911


Number of ndigit LynchBell numbers.


2



0, 9, 5, 30, 67, 84, 248, 105, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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OFFSET

0,2


COMMENTS

There are 548 LynchBell numbers, listed in A115569; a(n)=0 for n>7.


LINKS

Table of n, a(n) for n=0..51.


EXAMPLE

There are no (LynchBell) numbers with zero digits.
The nine onedigit LynchBell numbers are {1, ..., 9}.
The five twodigit LynchBell numbers are {12, 15, 24, 36, 48}.
The sevendigit LynchBell numbers are 105 permutations of (the digits of) 9867312, which is the largest possible LynchBell number. (The digit 5 cannot appear since there is at least one even digit. Replacing any of the given 7 digits by a digit 4 yields numbers not divisible by 9, or not divisible by 3 if the 9 is replaced.)


PROG

(PARI) A117911(n)=#A115569_row(n) \\ M. F. Hasler, Jan 31 2016


CROSSREFS

Cf. A115569.
Sequence in context: A238475 A180878 A146282 * A061041 A248308 A035417
Adjacent sequences: A117908 A117909 A117910 * A117912 A117913 A117914


KEYWORD

base,nonn


AUTHOR

Rick L. Shepherd, Apr 02 2006


EXTENSIONS

Extended to index 0, and some more zeros appended by M. F. Hasler, Jan 31 2016


STATUS

approved



