A192248 -id:A192248 - cp's OEIS frontend

A192069 (A192249)/5.

0, 1, 4, 18, 60, 186, 522, 1380, 3459, 8321, 19332, 43629, 96045, 206953, 437677, 910549, 1866952, 3778561, 7558953, 14963504, 29340482, 57033862, 109989752, 210575822, 400452782, 756836537, 1422191570, 2658250044, 4943946756, 9152396892

Offset: 1

Clark Kimberling, Jun 27 2011

nonn

See A192232, A192249.

Cf. A192232, A192248, A192249.

Mathematica
```
(See A192248.)
```

Conjecture: G.f.: x^2*(1-2*x+4*x^2-3*x^3+x^4) / ( (x-1)*(x^2+x-1)^5 ). - R. J. Mathar, May 04 2014

A192249 1-sequence of reduction of binomial coefficient sequence B(n,4)=A000332 by x^2 -> x+1.

Original entry on oeis.org

0, 5, 20, 90, 300, 930, 2610, 6900, 17295, 41605, 96660, 218145, 480225, 1034765, 2188385, 4552745, 9334760, 18892805, 37794765, 74817520, 146702410, 285169310, 549948760, 1052879110, 2002263910, 3784182685, 7110957850, 13291250220

Offset: 1

Clark Kimberling, Jun 27 2011

nonn

See A192232 for definition of "k-sequence of reduction of [sequence] by [substitution]".

Cf. A192232, A192248, A192069.

Mathematica
```
(See A192248.)
```

a(n) = 5*A192069(n).

Conjecture: G.f.: 5*x^2*(1-2*x+4*x^2-3*x^3+x^4) / ( (x-1)*(x^2+x-1)^5 ). - R. J. Mathar, May 04 2014

cp's OEIS Frontend

A192069 (A192249)/5.

Views

Author

Keywords

Comments

Crossrefs

Programs

Mathematica

Formula