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Search: id:A083080
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A083080 Main diagonal of number array A083075. +0
4
1, 3, 33, 547, 11713, 309411, 9763393, 359046339, 15096500481, 714852041923, 37660464739681, 2185503641764323, 138548894120306881, 9527726662032987747, 706481006206076565633, 56192761405186331759491 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=(n(2n+3)^n+1)/(n+1)

CROSSREFS

Cf. A083081, A083082.

Sequence in context: A011922 A071405 A092170 this_sequence A002916 A009659 A144756

Adjacent sequences: A083077 A083078 A083079 this_sequence A083081 A083082 A083083

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 23 2003

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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