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A001219 Triangular numbers of form a(a+1)(a+2). +0
1
6, 120, 210, 990, 185136, 258474216 (list; graph; listen)
OFFSET

1,1
REFERENCES

R. K. Guy, Unsolved Problems in Number Theory, D3.

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

CROSSREFS

Sequence in context: A081537 A127726 A117063 this_sequence A076233 A066581 A054776

Adjacent sequences: A001216 A001217 A001218 this_sequence A001220 A001221 A001222

KEYWORD

nonn,fini,full

AUTHOR

njas

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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