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Search: id:A025272
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A025272 a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 5. +0
1
1, 1, 1, 2, 6, 17, 50, 150, 458, 1420, 4460, 14165, 45422, 146870, 478366, 1568076, 5169332, 17127466, 57005220, 190503772, 638986740, 2150472248, 7259433880, 24574658829, 83404648534, 283742556262, 967415888822, 3305124188428 (list; graph; listen)
OFFSET

1,4
CROSSREFS

Sequence in context: A148446 A027914 A098703 this_sequence A148447 A148448 A148449

Adjacent sequences: A025269 A025270 A025271 this_sequence A025273 A025274 A025275

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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