A053066 - OEIS

A053066

Alternately append n-th prime to end or beginning of previous term.

2, 23, 523, 5237, 115237, 11523713, 1711523713, 171152371319, 23171152371319, 2317115237131929, 312317115237131929, 31231711523713192937, 4131231711523713192937, 413123171152371319293743

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

REFERENCES

Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000

LINKS

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

MATHEMATICA

a = {2}; For[n = 2, n < 30, n++, If[EvenQ[n], AppendTo[a, FromDigits[ Join[IntegerDigits[a[[ -1]]], IntegerDigits[Prime[n]]]]], AppendTo[a, FromDigits[Join[ IntegerDigits[Prime[n]], IntegerDigits[a[[ -1]]]]]]]]; a (* Stefan Steinerberger, Jun 17 2007 *)

CROSSREFS

Sequence in context: A054260 A053160 A167416 * A167417 A053161 A090731

Adjacent sequences: A053063 A053064 A053065 * A053067 A053068 A053069

KEYWORD

easy,nonn,base,less

AUTHOR

Felice Russo, Feb 25 2000

EXTENSIONS

More terms from Stefan Steinerberger, Jun 17 2007

STATUS

approved