

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
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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



