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 A134712 Base-2 logarithm of (n-th even superperfect number divided by 2^n). 0
 0, 0, 1, 2, 7, 10, 11, 22, 51, 78, 95, 114, 507, 592, 1263, 2186, 2263, 3198, 4233, 4402, 9667, 9918, 11189, 19912, 21675, 23182, 44469, 86214, 110473, 132018, 216059, 756806, 859399, 1257752, 1398233, 2976184, 3021339, 6972554, 13466877 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Table of n, a(n) for n=1..39. Omar E. Pol, Determinacion geometrica de los numeros primos y perfectos. FORMULA a(n) = log_2(A061652(n)/(2^n)) = A000043(n) - n - 1 = A090748(n) - n. EXAMPLE a(5)=7 because the 5th even superperfect number is 4096, 2^5=32, 4096/32=128 and log_2(128) = 7 (because 2^7=128). CROSSREFS Cf. A000043, A000396, A000668, A019279, A061652, A090748, A133028. Sequence in context: A045266 A108493 A069494 * A030344 A190433 A277551 Adjacent sequences: A134709 A134710 A134711 * A134713 A134714 A134715 KEYWORD nonn AUTHOR Omar E. Pol, Nov 07 2007 STATUS approved

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Last modified February 27 16:21 EST 2024. Contains 370378 sequences. (Running on oeis4.)