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A048487
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a(n) = T(4,n), array T given by A048483.
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8
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1, 6, 16, 36, 76, 156, 316, 636, 1276, 2556, 5116, 10236, 20476, 40956, 81916, 163836, 327676, 655356, 1310716, 2621436, 5242876, 10485756, 20971516, 41943036, 83886076, 167772156, 335544316, 671088636, 1342177276, 2684354556
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums of triangle A131113. - Gary W. Adamson, Jun 15 2007
a(n) = sum of (n+1)-th row terms of triangle A134636. This sequence is the binomial transform of 1, 5, 5, (5 continued). - Gary W. Adamson, Nov 04 2007
Row sums of triangle A135856. - Gary W. Adamson, Dec 01 2007
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..1000
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FORMULA
| a(n) = 5*2^n-4. - Henry Bottomley, May 29 2001
a(n) = 2*a(n-1)+4, n>0, a(0)=1 - Paul Barry, Aug 25 2004
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MATHEMATICA
| a=1; lst={a}; k=5; Do[a+=k; AppendTo[lst, a]; k+=k, {n, 0, 5!}]; lst [From Vladimir Orlovsky, Dec 15 2008]
a=6; lst={1, a}; k=10; Do[a+=k; AppendTo[lst, a]; k+=k, {n, 0, 5!}]; lst [From Vladimir Orlovsky, Dec 17 2008]
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PROG
| (MAGMA)[5*2^n-4: n in [0..30]]; // Vincenzo Librandi, Sep 23 2011
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CROSSREFS
| Cf. A010716 (n-th difference of a(n), a(n-1), ..., a(0)).
Diagonal of A062001. Cf. A048483.
A column of A119726.
Cf. A131113.
Cf. A134636.
Cf. A135856.
Sequence in context: A178465 A120586 A171373 * A124699 A064602 A058272
Adjacent sequences: A048484 A048485 A048486 * A048488 A048489 A048490
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KEYWORD
| nonn,easy
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu)
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