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A118413 Triangle read by rows: T(n,k) = (2*n-1)*2^(k-1), 0<k<=n. 17
1, 3, 6, 5, 10, 20, 7, 14, 28, 56, 9, 18, 36, 72, 144, 11, 22, 44, 88, 176, 352, 13, 26, 52, 104, 208, 416, 832, 15, 30, 60, 120, 240, 480, 960, 1920, 17, 34, 68, 136, 272, 544, 1088, 2176, 4352, 19, 38, 76, 152, 304, 608, 1216, 2432, 4864, 9728, 21, 42, 84, 168 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Central terms give A118415; row sums give A118414;
T(n,1) = A005408(n-1);
T(n,2) = A016825(n-1) for n>1;
T(n,3) = A017113(n-1) for n>2;
T(n,4) = A051062(n-1) for n>3;
T(n,n-2) = A052951(n-1) for n>2;
T(n,n) = A014480(n-1) = A118416(n,n);
A001511(T(n,k)) = A002260(n,k);
A003602(T(n,k)) = A002024(n,k).
LINKS
EXAMPLE
1
3 6
5 10 20
7 14 28 56
9 18 36 72 144
11 22 44 88 176 352
13 26 52 104 208 416 832
15 30 60 120 240 480 960 1920
17 34 68 136 272 544 1088 2176 4352
19 38 76 152 304 608 1216 2432 4864 9728
MATHEMATICA
Select[Flatten[Table[(2n-1)2^(k-1), {n, 20}, {k, 0, n}]], IntegerQ] (* Harvey P. Dale, Jan 17 2024 *)
CROSSREFS
Sequence in context: A246978 A127780 A350661 * A295320 A093419 A160049
KEYWORD
nonn,tabl,easy
AUTHOR
Reinhard Zumkeller, Apr 27 2006
STATUS
approved

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Last modified March 19 03:21 EDT 2024. Contains 370952 sequences. (Running on oeis4.)