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A160965 Row sums of triangle defined in A120853. 1
1, 3, 6, 10, 45, 141, 973, 6476, 58257, 582535, 6407841, 76894038, 999622429, 13994713929, 209920708845, 3358731341416, 57098432803953, 1027771790471019, 19527664018949209, 390553280378984010, 8201618887958664021 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

Fifth row is 1, 5, 9, 13, 17, so a(5) = 45.

PROG

(MAGMA) S:=[ [1] ]; for n in [2..21] do Append(~S, [1+i*Max([ x: x in S[n-1] | x eq 1 or not IsPrime(x) ]): i in [0..n-1] ]); end for; [ &+R: R in S ];

CROSSREFS

Cf. A120853.

Sequence in context: A062100 A048089 A081975 * A069708 A061455 A068071

Adjacent sequences:  A160962 A160963 A160964 * A160966 A160967 A160968

KEYWORD

nonn

AUTHOR

Klaus Brockhaus, May 31 2009

STATUS

approved

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Last modified May 23 01:22 EDT 2013. Contains 225585 sequences.