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A048515 a(n) = T(n,n), array T given by A048505. 3
1, 5, 35, 160, 577, 1816, 5245, 14288, 37313, 94384, 232861, 563080, 1339249, 3141464, 7282493, 16711456, 38010625, 85786336, 192282301, 428342936, 948960881, 2091908680, 4590665245, 10032774640, 21843934657 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..2000

FORMULA

a(n) = (9*n^2 + n) * 2^(n-2) - n^2 + 1. - Ralf Stephan, Feb 05 2004

PROG

(MAGMA) [(9*n^2 + n) * 2^(n-2) - n^2 + 1: n in [0..30]]; // Vincenzo Librandi, Sep 26 2011

CROSSREFS

Sequence in context: A097872 A184707 A124793 * A100739 A043014 A165755

Adjacent sequences:  A048512 A048513 A048514 * A048516 A048517 A048518

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 18:22 EST 2012. Contains 205835 sequences.