A272654 Binary words beginning with 1 which are abelian squares.

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

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 * A342036 A004656 A143016

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