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A220103
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Triangular numbers that are also Jacobsthal numbers (A001045).
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0
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..5.
Thomas Koshy and Zhenguang Gao, Triangular Numbers in the Jacobsthal Family, INTEGERS, Electronic J. of Combinatorial Number Theory, Vol. 12, Paper A64, 2012.
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CROSSREFS
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Cf. A000217, A001045.
Sequence in context: A262977 A214391 A046637 * A132805 A189475 A331328
Adjacent sequences: A220100 A220101 A220102 * A220104 A220105 A220106
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KEYWORD
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nonn,fini,full
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AUTHOR
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Eric M. Schmidt, Dec 04 2012
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STATUS
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approved
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