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A132479 Row sums of triangle A132478. 2
1, 5, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648, 4294967296, 8589934592 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(0) = 1, a(2) = 5, a(n) = 2^(n+2) for n > 1.
G.f.: -(1 + 3*x + 6*x^2)/(-1 + 2*x). - R. J. Mathar, Nov 14 2007
E.g.f.: 4*exp(2*x) - 3*(1 + x). - Stefano Spezia, Feb 20 2023
EXAMPLE
a(3) = 32 = sum of row 3 terms of triangle A132478: (4 + 9 + 18 + 1).
a(3) = 32 = 2^5.
CROSSREFS
Sequence in context: A222535 A063076 A270805 * A045944 A038361 A227719
KEYWORD
nonn,easy
AUTHOR
Gary W. Adamson, Aug 23 2007
EXTENSIONS
More terms from Stefano Spezia, Feb 20 2023
STATUS
approved

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)