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 A061831 Multiples of 9 having only even digits. 3
 0, 288, 468, 486, 648, 666, 684, 828, 846, 864, 882, 2088, 2268, 2286, 2448, 2466, 2484, 2628, 2646, 2664, 2682, 2808, 2826, 2844, 2862, 2880, 4068, 4086, 4248, 4266, 4284, 4428, 4446, 4464, 4482, 4608, 4626, 4644, 4662, 4680, 4806, 4824, 4842, 4860, 6048, 6066 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 FORMULA For n >= 2, a(A305826(n)+1) = 2*10^n+88. - Robert Israel, Jun 10 2018 EXAMPLE 648 = 9*72 is a term having all even digits. MAPLE f:= proc(k) local L, t;   L:= convert(k, base, 5);   t:= 2*add(L[i]*10^(i-1), i=1..nops(L));   if t mod 9 = 0 then t fi end proc: map(f, [\$0..1000]); # Robert Israel, Jun 10 2018 PROG (PARI) is(n)=n%9==0 && #setintersect(Set(digits(n)), [1, 3, 5, 7, 9])==0 \\ Charles R Greathouse IV, Feb 15 2017 CROSSREFS Cf. A061829, A305826. Sequence in context: A345807 A244196 A280515 * A250774 A082994 A127350 Adjacent sequences:  A061828 A061829 A061830 * A061832 A061833 A061834 KEYWORD nonn,base,easy AUTHOR Amarnath Murthy, May 29 2001 EXTENSIONS Corrected and extended by Larry Reeves (larryr(AT)acm.org), May 30 2001 Offset corrected by Charles R Greathouse IV, Feb 15 2017 Missing term 2880 inserted by Robert Israel, Jun 10 2018 STATUS approved

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Last modified July 28 23:26 EDT 2021. Contains 346340 sequences. (Running on oeis4.)