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A241882 Numbers with d digits that are divisible by 2^d and have at most 2 distinct digits: exactly one even digit and at most one odd digit. 0
2, 4, 6, 8, 12, 16, 32, 36, 44, 52, 56, 72, 76, 88, 92, 96, 112, 144, 232, 272, 336, 344, 544, 552, 616, 656, 696, 744, 776, 888, 944, 992, 1616, 1888, 2112, 2272, 2992, 3232, 3344, 3888, 4144, 4544, 4944, 5552, 5888, 6336, 6656, 7744, 7776, 7888, 9696, 9888 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Union of 20 different sequences, all of which are defined as "a(n) contains n digits (either [any odd digit] or [any nonzero even digit] and is divisible by 2^n)."

Subsequence of A050622. - Michel Marcus, May 07 2014

LINKS

Table of n, a(n) for n=1..52.

EXAMPLE

24 is not in the sequence because it has distinct even digits.

PROG

(PARI) isok(n) = {digs = digits(n); d = #digs; if (n % 2^d, return (0)); sd = Set(digs); if (#sd > 2, return (0)); if (#sd < 2, return (1)); ((sd[1] % 2) + (sd[2] % 2)) == 1; } \\ Michel Marcus, May 02 2014

CROSSREFS

Cf. A035014, A053312-A053318, A053332-A053338, A053376-A053380 (sequences whose union is this sequence).

Sequence in context: A242101 A131117 A181821 * A238626 A168657 A240498

Adjacent sequences:  A241879 A241880 A241881 * A241883 A241884 A241885

KEYWORD

base,nonn

AUTHOR

J. Lowell, Apr 30 2014

EXTENSIONS

More terms from Michel Marcus, May 02 2014

STATUS

approved

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Last modified December 5 15:11 EST 2019. Contains 329753 sequences. (Running on oeis4.)