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A036388
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Number of odd split numbers (A036382) of which the binary order (A029837) is <= n, i.e., those which occur below 2^n.
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1
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0, 0, 0, 0, 1, 4, 12, 30, 70, 157, 348, 748, 1603, 3379, 7076, 14720, 30472, 62837, 129141, 264711, 541301, 1104733, 2250778, 4578841, 9303111, 18880287, 38277715, 77533844, 156924293, 317374503, 641463198, 1295724682
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OFFSET
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1,6
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LINKS
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FORMULA
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EXAMPLE
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Below 32 the only odd split number is 21, so a(5) = 1. (In this range there are also 11 primes, 7 true prime powers, 1 composite connected number (15) and 4 even split numbers.)
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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a(9) onward corrected and a(21)-a(32) from Sean A. Irvine, Oct 29 2020
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STATUS
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approved
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