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A003590 Rows of Pascal's triangle written as a single number. 3
1, 11, 121, 1331, 14641, 15101051, 1615201561, 172135352171, 18285670562881, 193684126126843691, 1104512021025221012045101, 1115516533046246233016555111, 1126622049579292479249522066121, 11378286715128717161716128771528678131 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

If n<=500, a(n) is prime only for a(2)=11, a(9)=18285670562881, and a(30). [Enrique Pérez Herrero, Jun 05 2010]

LINKS

Table of n, a(n) for n=1..14.

FORMULA

mod(a(n),100) = 1+10*mod(n,10). [Enrique Pérez Herrero, May 27 2010]

MATHEMATICA

A003590[i_Integer] := ToExpression[StringJoin[Table[ToString[Binomial[i, j]], {j, 0, i}]]] (* Enrique Pérez Herrero, May 27 2010 *)

PROG

(PARI) A003590(i)={ my(j, a); a=""; for(j=0, i, a=Str(a, binomial(i, j)) ); return(eval(a)); } /* Enrique Pérez Herrero, Jun 03 2010 */

CROSSREFS

Cf. A007318.

Sequence in context: A325203 A055479 A195946 * A072051 A092846 A214993

Adjacent sequences:  A003587 A003588 A003589 * A003591 A003592 A003593

KEYWORD

nonn,easy,base

AUTHOR

Matthew Wells (mwells(AT)nmt.edu)

STATUS

approved

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Last modified October 23 14:54 EDT 2019. Contains 328345 sequences. (Running on oeis4.)