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Search: id:A059387
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| 0, 2, 24, 182, 1200, 7502, 45864, 277622, 1672800, 10057502, 60406104, 362617862, 2176246800, 13059091502, 78359364744, 470170602902, 2821066795200, 16926530173502, 101559568985784, 609358577224742, 3656154952230000
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OFFSET
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0,2
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COMMENT
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a(n) = A000225(n) * A024023(n) = (2^n - 1) * (3^n - 1) . a(n) is the number of n-tuples of elements e_1,e_2,...,e_n in the cyclic group C_6 such that the subgroup generated by e_1,e_2,...,e_n is C_6 . - Sharon Sela (sharonsela(AT)hotmail.com), Jun 02 2002
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REFERENCES
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L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 199, #3.
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CROSSREFS
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Cf. A000225, A024023.
Sequence in context: A073066 A002736 A131972 this_sequence A126190 A121356 A052780
Adjacent sequences: A059384 A059385 A059386 this_sequence A059388 A059389 A059390
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jan 29 2001
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