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A325804 Positions of nonzero terms of Product_{k=0..floor(log_2(n))} (1 + A004718(floor(n/(2^k)))). 3
0, 1, 3, 6, 7, 12, 14, 15, 24, 25, 28, 29, 30, 31, 48, 50, 51, 56, 57, 58, 60, 61, 62, 63, 96, 97, 100, 101, 102, 103, 112, 113, 114, 115, 116, 117, 120, 121, 122, 123, 124, 125, 126, 127, 192, 194, 195, 200, 201, 202, 204, 205, 206, 207, 224, 225, 226, 228 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Mikhail Kurkov, Table of n, a(n) for n = 1..13495

FORMULA

a(n) - a(n-1) belongs to A094373 (conjectured). - Mikhail Kurkov, Feb 20 2021

PROG

(PARI) b(n) = if(n==0, 0, (-1)^(n+1)*b(n\2) + n%2); \\ A004718

f(n) = if(n==0, 1, prod(k=0, logint(n, 2), 1+b(n\2^k)));

isok(n) = f(n)!=0; \\ Michel Marcus, May 24 2019

CROSSREFS

Cf. A004718, A325803.

Sequence in context: A138038 A095029 A028792 * A144795 A077459 A048717

Adjacent sequences:  A325801 A325802 A325803 * A325805 A325806 A325807

KEYWORD

nonn

AUTHOR

Mikhail Kurkov, May 22 2019

STATUS

approved

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Last modified May 14 11:06 EDT 2021. Contains 343882 sequences. (Running on oeis4.)