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A208446 Duplicate of A172634. 1
1, 1, 7, 31, 175, 991, 5881, 35617, 219871, 1376095, 8710537, 55644337, 358198369, 2320792657, 15120204295, 98984058271, 650725327231, 4293779332927, 28425752310361, 188739799967425, 1256510215733185 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n = 0..20

CROSSREFS

Sequence in context: A188233 A319457 A264608 * A172634 A322205 A139151

Adjacent sequences:  A208443 A208444 A208445 * A208447 A208448 A208449

KEYWORD

dead

STATUS

approved

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Last modified August 5 16:00 EDT 2020. Contains 336213 sequences. (Running on oeis4.)