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A152920
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Triangle read by rows: triangle A062111 reversed.
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9
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0, 1, 1, 2, 3, 4, 3, 5, 8, 12, 4, 7, 12, 20, 32, 5, 9, 16, 28, 48, 80, 6, 11, 20, 36, 64, 112, 192, 7, 13, 24, 44, 80, 144, 256, 448, 8, 15, 28, 52, 96, 176, 320, 576, 1024, 9, 17, 32, 60, 112, 208, 384, 704, 1280, 2304, 10, 19, 36, 68, 128, 240, 448, 832, 1536, 2816
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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FORMULA
| Row sums: (2^n-1)(n+1)=A058877(n). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 22 2009]
T(2n,n) = 3*n*2^(n-1) = 3*A001787(n). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 20 2009]
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MAPLE
| A062111 := proc(n, k) (k+n)*2^(k-n-1) ; end: A152920 := proc(n, k) A062111(n-k, n) ; end: for n from 0 to 15 do for k from 0 to n do printf("%d, ", A152920(n, k)) ; od: od: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 22 2009]
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CROSSREFS
| Cf. A001787.
Columns : A001787, A001792, A045623, A045891, A034007, A111297, A159694, A159695, A159696, A159697 [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 20 2009]
Sequence in context: A160180 A078908 A159797 * A080383 A086369 A092089
Adjacent sequences: A152917 A152918 A152919 * A152921 A152922 A152923
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KEYWORD
| nonn,tabl,easy
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Dec 15 2008
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2008
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 22 2009
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