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A093935 a(1) = 1, a(n+1) = a(n) + n*(a(1) + a(2) + ... + a(n)). 0
1, 2, 8, 41, 249, 1754, 14084, 127057, 1272625, 14015014, 168323364, 2189619553, 30670104577, 460235322854, 7366138539416, 125257398648401, 2255126454472401, 42855262052316218, 857238357862313360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

FORMULA

a(1)=1, a(2)=2, a(n+1) = ((n^2 + n - 1)a(n) - na(n-1))/(n-1) (n >= 2). - Emeric Deutsch, Apr 18 2005

MAPLE

a[1]:=1:a[2]:=2: for n from 2 to 30 do a[n+1]:=((n^2+n-1)*a[n]-n*a[n-1])/(n-1) od:seq(a[n], n=1..23); # Emeric Deutsch, Apr 18 2005

CROSSREFS

Sequence in context: A294084 A177340 A067119 * A099240 A134055 A136281

Adjacent sequences:  A093932 A093933 A093934 * A093936 A093937 A093938

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Apr 26 2004

EXTENSIONS

More terms from Emeric Deutsch, Apr 18 2005

STATUS

approved

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Last modified September 20 18:26 EDT 2018. Contains 315240 sequences. (Running on oeis4.)