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A173787 Triangle read by rows: T(n,k) = 2^n - 2^k, 0<=k<=n. 18
0, 1, 0, 3, 2, 0, 7, 6, 4, 0, 15, 14, 12, 8, 0, 31, 30, 28, 24, 16, 0, 63, 62, 60, 56, 48, 32, 0, 127, 126, 124, 120, 112, 96, 64, 0, 255, 254, 252, 248, 240, 224, 192, 128, 0, 511, 510, 508, 504, 496, 480, 448, 384, 256, 0, 1023, 1022, 1020, 1016, 1008, 992, 960, 896, 768 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

A000120(T(n,k)) = A025581(n,k);

row sums give A000337; central terms give A020522;

T(2*n+1,n) = A006516(n+1); T(2*n+3,n+2) = A059153(n);

T(n,k) = A140513(n,k) - A173786(n,k), 0<=k<=n;

T(n,k) = A173786(n,k) - A059268(n+1,k+1), 0<k<=n;

T(2*n,2*k) = T(n,k) * A173786(n,k), 0<=k<=n;

T(n,0) = A000225(n);

T(n,1) = A000918(n) for n>0;

T(n,2) = A028399(n) for n>1;

T(n,3) = A159741(n-3) for n>3;

T(n,4) = A175164(n-4) for n>4;

T(n,5) = A175165(n-5) for n>5;

T(n,6) = A175166(n-6) for n>6;

T(n,n-4) = A110286(n-4) for n>3;

T(n,n-3) = A005009(n-3) for n>2;

T(n,n-2) = A007283(n-2) for n>1;

T(n,n-1) = A000079(n-1) for n>0;

T(n,n) = A000004(n).

LINKS

Table of n, a(n) for n=0..63.

EXAMPLE

   0;

   1,  0;

   3,  2,  0;

   7,  6,  4,  0;

  15, 14, 12,  8,  0;

  31, 30, 28, 24, 16, 0;

CROSSREFS

Sequence in context: A080779 A010604 A067585 * A116191 A257303 A048199

Adjacent sequences:  A173784 A173785 A173786 * A173788 A173789 A173790

KEYWORD

nonn,easy,tabl,changed

AUTHOR

Reinhard Zumkeller, Feb 28 2010

STATUS

approved

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Last modified June 25 00:41 EDT 2017. Contains 288708 sequences.