id:A139395 - OEIS Search Results

Search: id:A139395

Displaying 1-1 of 1 results found.

page 1

Decimal expansion of the sum 1/p(1)+1/[p(2)*p(3)]+1/[p(4)*p(5)*p(6)]+....., where p(n) is the n-th prime.

+0
2

5, 6, 7, 6, 7, 0, 3, 1, 9, 8, 4, 4, 5, 1, 9, 7, 2, 0, 8, 4, 0, 6, 9, 8, 2, 4, 2, 2, 9, 4, 2, 3, 2, 6, 7, 2, 5, 5, 8, 1, 1, 4, 8, 1, 3, 7, 3, 4, 6, 7, 3, 7, 8, 6, 3, 8, 3, 4, 2, 4, 9, 4, 7, 0, 5, 4, 8, 5, 8, 5, 1, 8, 7, 8, 5, 8, 7, 8, 4, 5, 9, 7, 3, 8, 2, 4, 3, 4, 1, 1, 9, 8, 1, 2, 1, 4, 3, 8, 3, 7 (list; cons; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Absolute difference between this number and A139396 is about 0.002.`
	MAPLE	`P:=proc(n) local a, b, i, j, k; a:=0.5; k:=1; for i from 2 by 1 to n do b:=1; for j from k by 1 to k+i-1 do b:=b*1/ithprime(j+1); od; k:=j; a:=evalf(a+b, 105); od; print(a); end: P(100);`
	CROSSREFS	`Cf. A139396.` `Sequence in context: A021642 A101288 A095942 this_sequence A029911 A002141 A114547` `Adjacent sequences: A139392 A139393 A139394 this_sequence A139396 A139397 A139398`
	KEYWORD	`easy,nonn,cons`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Apr 18 2008`

page 1

Search completed in 0.002 seconds

Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

AT&T Labs Research