A020991 Largest value of k for which Golay-Rudin-Shapiro sequence A020986(k) = n.

0, 3, 6, 15, 26, 27, 30, 63, 106, 107, 110, 111, 122, 123, 126, 255, 426, 427, 430, 431, 442, 443, 446, 447, 490, 491, 494, 495, 506, 507, 510, 1023, 1706, 1707, 1710, 1711, 1722, 1723, 1726, 1727, 1770, 1771, 1774, 1775, 1786, 1787, 1790, 1791, 1962, 1963

Offset

1,2

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

J. Brillhart and P. Morton, A case study in mathematical research: the Golay-Rudin-Shapiro sequence, Amer. Math. Monthly, 103 (1996) 854-869.

Eric Weisstein's World of Mathematics, Rudin-Shapiro Sequence

Formula

a(2^n) = 2^(2n) - 1. - Seiichi Manyama, Apr 23 2017

Crossrefs

Cf. A020986, A212591.

Sequence in context: A287189 A284168 A216304 * A079825 A339394 A327067

Adjacent sequences: A020988 A020989 A020990 * A020992 A020993 A020994

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Robert G. Wilson v; further extended by David W. Wilson, June 1997

Status

approved