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Search: id:A162256
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A162256 Row sums from A154680 +0
2
2, 15, 45, 98, 180, 297, 455, 660, 918, 1235, 1617, 2070, 2600, 3213, 3915, 4712, 5610, 6615, 7733, 8970, 10332, 11825, 13455, 15228, 17150, 19227, 21465, 23870, 26448, 29205, 32147, 35280, 38610, 42143, 45885, 49842, 54020, 58425, 63063, 67940 (list; graph; listen)
OFFSET

1,1

FORMULA

Row sum: sum_(n=1...m) T(m,n)=(2*m^3+5*m^2-3*m)/2

EXAMPLE

For m=1, 4/2=2; m=2, 30/2=15; m=3, 90/2=45

CROSSREFS

Cf. A154680

Sequence in context: A032016 A001007 A152015 this_sequence A041719 A133777 A025213

Adjacent sequences: A162253 A162254 A162255 this_sequence A162257 A162258 A162259

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jun 29 2009

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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