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Search: id:A116368
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A116368 Central terms of the triangle in A116366. +0
2
6, 12, 20, 30, 42, 54, 62, 76, 90, 102, 116, 130, 144, 154, 166, 190, 200, 218, 234, 246, 260, 276, 288, 320, 330, 342, 358, 372, 384, 408, 424, 448, 456, 486, 500, 516, 536, 550, 570, 588, 602, 624, 636, 654, 662, 690, 714, 730, 750, 774, 796, 810, 828, 850 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n) = A116366(2*n-1,n).

FORMULA

a(n) = A000040(n+1) + A000040(2*n).

CROSSREFS

Sequence in context: A109895 A083209 A080714 this_sequence A007622 A056930 A064971

Adjacent sequences: A116365 A116366 A116367 this_sequence A116369 A116370 A116371

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Feb 06 2006

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.


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