A091961 - OEIS

A091961

Numbers that are not binary cyclic right-rotating progressive sum of digits (see A091821) of any natural number.

9, 37, 38, 43, 54, 68, 76, 80, 93, 100, 111, 121, 139, 141, 149, 162, 169, 170, 181, 196, 197, 212, 214, 224, 232, 246, 248, 257, 265, 267, 268, 299, 304, 305, 320, 330, 337, 348, 351, 356, 364, 368, 374, 375, 383, 406, 417, 433, 441, 457

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OFFSET

1,1

COMMENTS

Let B(n) be the sequence A091821. If n (n>1) is a power of 2 then B(m) >= ceiling(n/floor(1+log_2(n))) for all m >= n. So if a number i does not occur within the first k (k>1) numbers of A091821 and k is a power of 2 and i < ceiling(k/floor(1+log_2(k))), i will not occur anywhere within A091821.

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Cf. A091821.

Sequence in context: A071134 A116108 A232257 * A103758 A274769 A126914

Adjacent sequences: A091958 A091959 A091960 * A091962 A091963 A091964

KEYWORD

base,easy,nonn

AUTHOR

Frank Schwellinger (nummer_eins(AT)web.de), Mar 13 2004

STATUS

approved