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A202259 Right-truncatable nonprimes: every prefix is nonprime number. 5
0, 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 40, 42, 44, 45, 46, 48, 49, 60, 62, 63, 64, 65, 66, 68, 69, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105, 106, 108, 120, 121, 122, 123, 124, 125, 126, 128, 129, 140, 141, 142 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Supersequence of A202260, A202265. - Barry Carter, Sep 16 2016

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

Barry Carter, Table of n, a(n) for n=1..23498959 (bz2 compressed)

Barry Carter, Mathematica package

MAPLE

filter:= proc(n) option remember; not isprime(n) and procname(floor(n/10)) end proc:

for i from 0 to 9 do filter(i):= not isprime(i) od:

select(filter, [$0..1000]); # Robert Israel, Nov 01 2016

CROSSREFS

Cf. A012883 (right-truncatable noncomposites), A024770 (right-truncatable primes), A202260 (right-truncatable composites).

Sequence in context: A046352 A046355 A163122 * A050655 A117098 A077136

Adjacent sequences:  A202256 A202257 A202258 * A202260 A202261 A202262

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Dec 25 2011

STATUS

approved

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Last modified February 16 21:04 EST 2019. Contains 320191 sequences. (Running on oeis4.)