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A092957 In the triangle 1 / 1*2 2*3 / 1*2*3 2*3*4 3*4*5 / ... if every number k is replaced by prime(k) one gets the following triangle 2 / 6 15 / 30 105 385 / 210 1155 5005 17017 / ... Sequence contains the row sums. 0
2, 21, 520, 23387, 1488080, 126969115, 14557233552, 1815049963645, 289937962615754, 52507954943028529, 9917857274310865368, 2089330987019155955571, 490521122195171102901196 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The leading diagonal is given by A060381 and the first column by A002110.

LINKS

Table of n, a(n) for n=1..13.

MAPLE

a:=n->sum(product(ithprime(i+j-1), j=1..n), i=1..n): seq(a(n), n=1..16); (Deutsch)

CROSSREFS

Cf. A092956.

Sequence in context: A199747 A226057 A158886 * A171107 A218768 A195736

Adjacent sequences:  A092954 A092955 A092956 * A092958 A092959 A092960

KEYWORD

easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 25 2004

EXTENSIONS

More terms from Emeric Deutsch, Jun 26 2005

STATUS

approved

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Last modified May 25 05:13 EDT 2013. Contains 225643 sequences.