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A278196
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Partition numbers (A000041) of the form 2^2 * k for odd k.
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7
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2436, 5604, 451276, 715220, 831820, 1300156, 7089500, 12132164, 15796476, 26543660, 190569292, 483502844, 761002156, 851376628, 1327710076, 2841940500, 3519222692, 9035836076, 54770336324, 1280011042268, 1820701100652, 3972999029388, 6085253859260
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OFFSET
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1,1
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COMMENTS
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Also partition numbers having twice as many even divisors as odd divisors.
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LINKS
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MATHEMATICA
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Select[PartitionsP@ Range@ 210, Count[#, k_ /; EvenQ@ k] == 2 Count[#, k_ /; OddQ@ k] &@ Divisors@ # &] (* Michael De Vlieger, Nov 15 2016 *)
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PROG
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(PARI) maxk=300; L=List(); for(k=1, maxk, p=numbpart(k); if(p%2^2==0 & p\2^2%2==1, listput(L, p))); Vec(L)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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