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Search: id:A083587
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A083587 4*3^n/3-5*0^n/6-(n-1)2^(n-1). +0
2
1, 4, 10, 28, 84, 260, 812, 2532, 7852, 24196, 74124, 225956, 686060, 2076612, 6270796, 18902500, 56904108, 171138308, 514332428, 1544963364, 4639084396, 13926166084, 41797372620, 125431963748, 376379777324, 1129315492740 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Cf. A083588.

Sequence in context: A026123 A091468 A103457 this_sequence A061639 A008995 A111236

Adjacent sequences: A083584 A083585 A083586 this_sequence A083588 A083589 A083590

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 01 2003

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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