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A272654 Binary words beginning with 1 which are abelian squares. 4
11, 1001, 1010, 1111, 100001, 100010, 100100, 101011, 101101, 101110, 110011, 110101, 110110, 111111, 10000001, 10000010, 10000100, 10001000, 10010011, 10010101, 10010110, 10011001, 10011010, 10011100, 10100011, 10100101, 10100110, 10101001, 10101010, 10101100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Binary strings of the form uv, where u begins with 1 and v is some permutation of u.

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..10000

PROG

(Python)

from sympy.utilities.iterables import multiset_permutations

A272654_list = [int(b+''.join(s)) for b in (bin(n)[2:] for n in range(1, 100)) for s in multiset_permutations(sorted(b))] # Chai Wah Wu, May 15 2016

CROSSREFS

Cf. A272653, A272655.

Sequence in context: A278955 A278753 A266670 * A004656 A143016 A152577

Adjacent sequences:  A272651 A272652 A272653 * A272655 A272656 A272657

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, May 14 2016

EXTENSIONS

More terms from Chai Wah Wu, May 15 2016

STATUS

approved

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Last modified March 29 05:39 EDT 2020. Contains 333105 sequences. (Running on oeis4.)