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A249307 Triangle read by rows: A249095(n,k) * 2^k, k = 0 .. 2*n+1. 5
1, 1, 2, 4, 1, 2, 8, 8, 16, 1, 2, 12, 16, 48, 32, 64, 1, 2, 16, 24, 96, 96, 256, 128, 256, 1, 2, 20, 32, 160, 192, 640, 512, 1280, 512, 1024, 1, 2, 24, 40, 240, 320, 1280, 1280, 3840, 2560, 6144, 2048, 4096, 1, 2, 28, 48, 336, 480, 2240, 2560, 8960, 7680 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Length of row n = 2*n+1;

T(n,2*n+1) = 4^n = A000302(n);

for n > 0: sum of row n = 7*5^(n-1), cf. A005055.

LINKS

Reinhard Zumkeller, Rows n = 0..125 of triangle, flattened

PROG

(Haskell)

a249307 n k = a249307_tabf !! n !! k

a249307_row n = a249307_tabf !! n

a249307_tabf = map (zipWith (*) a000079_list) a249095_tabf

CROSSREFS

Cf. A249095, A000079, A005408 (row lengths), A249308 (central terms), A000302 (right edge), A005055 (row sums, except initial 1), A013609.

Cf. A013609.

Sequence in context: A057176 A194671 A131398 * A209581 A050980 A053451

Adjacent sequences:  A249304 A249305 A249306 * A249308 A249309 A249310

KEYWORD

nonn,tabf

AUTHOR

Reinhard Zumkeller, Nov 14 2014

STATUS

approved

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Last modified February 21 22:56 EST 2018. Contains 299427 sequences. (Running on oeis4.)