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A030625
n(n+Z(n)), where Z( ) is the Narayana-Zidek-Capell sequence (A002083).
0
0, 2, 6, 12, 24, 40, 72, 126, 240, 459, 940, 1936, 4104, 8671, 18508, 39300, 83616, 177055, 374652, 789811, 1662400, 3488877, 7309588, 15279406, 31886928, 66422275, 138157708, 286924599, 595102144, 1232672869
OFFSET
0,2
CROSSREFS
Cf. A002083.
Sequence in context: A187272 A001116 A002336 * A029929 A222785 A053635
KEYWORD
nonn
AUTHOR
STATUS
approved