login
Numbers that are not binary cyclic right-rotating progressive sum of digits (see A091821) of any natural number.
1

%I #5 Nov 28 2019 06:11:16

%S 9,37,38,43,54,68,76,80,93,100,111,121,139,141,149,162,169,170,181,

%T 196,197,212,214,224,232,246,248,257,265,267,268,299,304,305,320,330,

%U 337,348,351,356,364,368,374,375,383,406,417,433,441,457

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

%C 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.

%Y Cf. A091821.

%K base,easy,nonn

%O 1,1

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