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Search: id:A015535
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A015535 Linear 2nd order recurrence. +0
2
0, 1, 5, 27, 145, 779, 4185, 22483, 120785, 648891, 3486025, 18727907, 100611585, 540513739, 2903791865, 15599986803, 83807517745, 450237562331, 2418802847145, 12994489360387, 69810052496225, 375039241201899 (list; graph; listen)
OFFSET

0,3

FORMULA

a(n) = 5 a(n-1) + 2 a(n-2).

CROSSREFS

Sequence in context: A084177 A037675 A052225 this_sequence A026292 A100193 A134425

Adjacent sequences: A015532 A015533 A015534 this_sequence A015536 A015537 A015538

KEYWORD

nonn,easy

AUTHOR

Olivier Gerard (ogerard(AT)ext.jussieu.fr)

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Last modified July 8 18:40 EDT 2008. Contains 141013 sequences.


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