A080466 Multiples of 11 in which the even positioned digits from left are even and the odd positioned ones are odd.

121, 143, 165, 187, 341, 363, 385, 561, 583, 781, 1012, 1034, 1056, 1078, 1210, 1232, 1254, 1276, 1298, 1430, 1452, 1474, 1496, 1650, 1672, 1694, 1870, 1892, 3014, 3036, 3058, 3212, 3234, 3256, 3278, 3410, 3432, 3454, 3476, 3498, 3630, 3652, 3674, 3696

Offset

1,1

Links

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

Maple

filter:= proc(n) local L, L1, L2;
L:= convert(n, base, 10);
L1:= {seq(L[-i], i=2..nops(L), 2)};
L2:= {seq(L[-i], i=1..nops(L), 2)};
andmap(type, L1, even) and andmap(type, L2, odd)
end proc:
select(filter, [seq(i, i=11..10000, 11)]); # Robert Israel, Mar 06 2018

Crossrefs

Cf. A008593, A080467.

Sequence in context: A319923 A020253 A182776 * A271630 A038511 A285784

Adjacent sequences: A080463 A080464 A080465 * A080467 A080468 A080469

Keyword

base,nonn,look

Author

Amarnath Murthy, Mar 02 2003

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 06 2003

Status

approved