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.

2, 21, 520, 23387, 1488080, 126969115, 14557233552, 1815049963645, 289937962615754, 52507954943028529, 9917857274310865368, 2089330987019155955571, 490521122195171102901196

Offset: 1

Author

Amarnath Murthy, Mar 25 2004

Keywords

• easy
• nonn

Comments

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

Crossrefs

Cf. A092956.

Programs

Maple

a:=n->sum(product(ithprime(i+j-1),j=1..n),i=1..n): seq(a(n),n=1..16); # Emeric Deutsch, Jun 26 2005

Extensions

More terms from Emeric Deutsch, Jun 26 2005