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A333879 a(n) is the number of primes 2^(n-1) <= p < 2^n with maximal Hamming weight A091937(n-1) in this interval. 3
1, 1, 2, 1, 3, 1, 4, 4, 3, 1, 5, 1, 4, 18, 3, 1, 8, 1, 11, 4, 5, 31, 7, 1, 2, 33, 1, 5, 4, 1, 7, 5, 1, 1, 9, 55, 6, 71, 7, 1, 6, 69, 4, 7, 2, 1, 10, 3, 3, 1, 2, 1, 6, 95, 4, 3, 61, 1, 8, 1, 3, 110, 3, 1, 8, 1, 2, 2, 3, 98, 9, 1, 5, 2, 5, 8, 3, 125, 10, 3, 81, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,3
LINKS
MATHEMATICA
a[2]=1; a[n_] := Block[{c = 0, nb = 0}, While[c == 0, c = Count[2^n - 1 - Total /@ Subsets[2^Range[n - 2], {nb}], x_ /; PrimeQ[x]]; nb++]; c]; a /@ Range[2, 85] (* Giovanni Resta, Apr 09 2020 *)
CROSSREFS
Sequence in context: A225045 A361736 A278575 * A175126 A142884 A347028
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Apr 08 2020
EXTENSIONS
Terms a(35) and beyond from Giovanni Resta, Apr 09 2020
STATUS
approved

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Last modified June 23 11:27 EDT 2024. Contains 373644 sequences. (Running on oeis4.)