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A059274 Analog of A059226 in which left diagonal is all 1's. 3
1, 1, 2, 1, 5, 8, 1, 11, 28, 39, 1, 23, 80, 164, 214, 1, 47, 208, 548, 1010, 1274, 1, 95, 512, 1632, 3744, 6490, 8028, 1, 191, 1216, 4528, 12248, 25868, 43132, 52698, 1, 383, 2816, 11968, 37024, 90624, 181272, 294366, 356630, 1, 767 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

G. C. Greubel, Table of n, a(n) for the first 51 rows, flattened

EXAMPLE

Triangle begins with:

  1;

  1,    2;

  1,    5,    8;

  1,   11,   28,   39;

  1,   23,   80,  164,  214;

  1,   47,  208,  548, 1010, 1274;

  1,   95,  512, 1632, 3744, 6490, 8028;

  ... - G. C. Greubel, Jan 03 2017

MATHEMATICA

T[i_, j_]:= T[i, j] = Module[{r, s, t1}, If[i == 0 && j == 0, Return[1]];

If[j == 0, Return[1]]; t1 = T[i, j - 1]; For[r = 0, r <= i - j, r++,

For[s = 0, s <= j, s++, If[r + s != i, t1 = t1 + T[r + s, s]]]];

Return[t1]]; Table[T[n, k], {n, 0, 10}, {k, 0, n}] // Flatten (* G. C. Greubel, Jan 03 2017 *)

CROSSREFS

Cf. A059226, A059274.

Sequence in context: A268950 A141507 A193603 * A082635 A166623 A094510

Adjacent sequences:  A059271 A059272 A059273 * A059275 A059276 A059277

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 24 2001

STATUS

approved

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Last modified June 26 01:15 EDT 2017. Contains 288748 sequences.