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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 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 A329734 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 April 21 17:36 EDT 2021. Contains 343156 sequences. (Running on oeis4.)