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Search: id:A019486
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A019486 a(n) = 2*a(n-1) + a(n-2) - a(n-4) - a(n-5) - a(n-6) - a(n-7). +0
1
2, 5, 12, 28, 65, 150, 346, 795, 1826, 4192, 9621, 22078, 50660, 116239, 266704, 611930, 1404013, 3221358, 7391048, 16957921, 38908004, 89269924, 204819503, 469934590, 1078210352, 2473828397, 5675911794, 13022719964 (list; graph; listen)
OFFSET

0,1
REFERENCES

R. K. Guy, personal communication.

CROSSREFS

Sequence in context: A006980 A045623 A001410 this_sequence A019485 A018914 A129519

Adjacent sequences: A019483 A019484 A019485 this_sequence A019487 A019488 A019489

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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

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