A046076 Indices of binary undulants; numbers n such that 2^n contains the alternating sequence of digits 010... or 101...

103, 107, 138, 159, 179, 187, 192, 199, 205, 211, 217, 218, 234, 249, 254, 264, 269, 285, 288, 293, 296, 299, 304, 305, 316, 347, 350, 354, 364, 368, 378, 383, 384, 385, 390, 393, 406, 416, 420, 427, 436, 443, 445, 449, 451, 454, 457, 462, 463, 485, 488

Offset

1,1

References

C. A. Pickover, ``The Undulation of the Monks.'' Ch. 20 in Keys to Infinity. New York: W.H.Freeman, pp. 159-161 1995.

C. A. Pickover, "Wonders of Numbers", Oxford New York 2001, Chapter 52, pp. 123-124, 316-317.

Links

Table of n, a(n) for n=1..51.

C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review

Eric Weisstein's World of Mathematics, Undulating Number.

Crossrefs

Cf. A033619, A046075, A046077.

Sequence in context: A161402 A318295 A165294 * A178527 A144714 A140817

Adjacent sequences: A046073 A046074 A046075 * A046077 A046078 A046079

Keyword

nonn,base

Author

Eric W. Weisstein

Status

approved