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A136104 A007318 * A002110; a(n) = Sum_{k=0..n} binomial(n,k)*A002110(k). 7
1, 3, 11, 55, 375, 3731, 47743, 777771, 14770535, 331611235, 9205305591, 285781156343, 10308779559631, 418386835375575, 18097509979840775, 846748292083023991, 44182142790019823943, 2570069981187508600331, 157428743473326543397855, 10449715795107936675445215, 739751959772798881608189731 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..350

Index entries for triangles and arrays related to Pascal's triangle

Index entries for sequences related to primorial numbers

FORMULA

Binomial transform of primorial numbers, A002110.

a(n) = A276085(A007188(n)). - Antti Karttunen, Sep 18 2016

EXAMPLE

a(3) = 55 = (1, 3, 3, 1) dot (1, 2, 6, 30) = (1 + 6 + 18 + 30); where A002110 = (1, 2, 6, 30, 210, 2310,...).

MAPLE

b:= proc(n) option remember; `if`(n=0, 1, ithprime(n)*b(n-1)) end:

a:= n-> add(binomial(n, k)*b(k), k=0..n):

seq(a(n), n=0..20);  # Alois P. Heinz, Sep 20 2016

MATHEMATICA

b[n_] := b[n] = If[n==0, 1, Prime[n]*b[n-1]]; a[n_] := Sum[Binomial[n, k]*b[k], {k, 0, n}]; Table[a[n], {n, 0, 20}] (* Jean-Fran├žois Alcover, Feb 22 2017, translated from Maple *)

CROSSREFS

Cf. A002110, A007188, A007318, A276085.

Leftmost column of A276586.

Cf. also A001339, A121572.

Sequence in context: A261001 A207556 A180875 * A174627 A302147 A007841

Adjacent sequences:  A136101 A136102 A136103 * A136105 A136106 A136107

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Dec 14 2007

EXTENSIONS

A few more terms from L. Edson Jeffery, Apr 11 2011

Explicit binomial sum formula added to the name by Antti Karttunen, Sep 19 2016

STATUS

approved

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Last modified November 26 23:41 EST 2020. Contains 338670 sequences. (Running on oeis4.)