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A278201 Partition numbers (A000041) of the form 2^7 * k for odd k. 7
541946240, 47826239745920, 49760750604354432757376, 18426207875324210441995136, 914345304752746677204951178080640, 377394877138559089794329589034333523822720, 33381228189530831120385246576357623531476650368, 23951815370456759593096244705083096637451017834880 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Also partition numbers having seven times as many even divisors as odd divisors.

LINKS

Colin Barker, Table of n, a(n) for n = 1..100

MATHEMATICA

Select[PartitionsP@ Range@ 2000, Count[#, k_ /; EvenQ@ k] == 7 Count[#, k_ /; OddQ@ k] &@ Divisors@ # &] (* Michael De Vlieger, Nov 15 2016 *)

PROG

(PARI) maxk=3000; L=List(); for(k=1, maxk, p=numbpart(k); if(p%2^7==0 & p\2^7%2==1, listput(L, p))); Vec(L)

CROSSREFS

Cf. A275029, A278196, A278197, A278198, A278199, A278200.

Sequence in context: A011579 A122970 A204779 * A172619 A090468 A214480

Adjacent sequences:  A278198 A278199 A278200 * A278202 A278203 A278204

KEYWORD

nonn

AUTHOR

Colin Barker, Nov 15 2016

STATUS

approved

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Last modified July 18 01:05 EDT 2019. Contains 325109 sequences. (Running on oeis4.)