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A274201 Limiting reverse row of the array A274196. 3
1, 1, 1, 1, 2, 2, 2, 3, 4, 4, 5, 7, 8, 9, 12, 15, 17, 21, 27, 32, 37, 47, 58, 68, 82, 103, 124, 147, 181, 223, 266, 321, 396, 480, 575, 701, 858, 1033, 1248, 1525, 1852, 2232, 2712, 3305, 3998, 4836, 5886, 7148, 8644, 10487, 12752, 15453, 18713, 22731, 27596 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

The triangular array (g(n,k)) in A274196 is defined as follows: g(n,k) = 1 for n >= 0; g(n,k) = 0 if k > n; g(n,k) = g(n-1,k-1) + g(n-1,4) for n > 0, k > 1.

LINKS

Table of n, a(n) for n=1..55.

MATHEMATICA

g[n_, 0] = g[n, 0] = 1;

g[n_, k_] := g[n, k] = If[k > n, 0, g[n - 1, k - 1] + g[n - 1, 4 k]];

z = 300; w = Reverse[Table[g[z, k], {k, 0, z}]];

Take[w, z/3]

CROSSREFS

Cf. A274196, A274199, A274200.

Sequence in context: A077564 A088044 A029051 * A079398 A225499 A215473

Adjacent sequences:  A274198 A274199 A274200 * A274202 A274203 A274204

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 16 2016

STATUS

approved

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Last modified October 18 02:23 EDT 2019. Contains 328135 sequences. (Running on oeis4.)