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A293023
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Generalized pentagonal numbers that are also Pell numbers.
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0
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OFFSET
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0,3
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COMMENTS
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Except for 0 and 2, these are also ordinary pentagonal numbers.
All terms are shown, as confirmed by Siva Rama Prasad and Srinivasa Rao (2002).
All (generalized) g-gonal numbers in the Pell sequence up to g=20 have been determined, see Tengely (2009).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,fini,easy,full
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AUTHOR
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STATUS
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approved
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