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A077290 Triangular numbers that are 6 times other triangular numbers. 3
0, 6, 36, 630, 3570, 61776, 349866, 6053460, 34283340, 593177346, 3359417496, 58125326490, 329188631310, 5695688818716 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

Let b(n) be A077289. Then a(n)=6*b(n)

EXAMPLE

b(3)=105 so a(3)=3*105=630

CROSSREFS

Cf. A077288, A077289, A077291.

Sequence in context: A185085 A201540 A195229 * A206636 A082027 A203106

Adjacent sequences:  A077287 A077288 A077289 * A077291 A077292 A077293

KEYWORD

easy,nonn

AUTHOR

Bruce Corrigan (scentman(AT)myfamily.com), Nov 03 2002

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Last modified February 16 21:17 EST 2012. Contains 205971 sequences.